Why Does The Earth Spin?
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- Опубликовано: 24 июл 2024
- The Earth spins on its axis, completing a full revolution every day. By why does it do this? One of the most common misconceptions in physics is the belief that constant motion requires a constant force. So many people believe there must be some force in the Earth (e.g. gravity, centrifugal force) that keeps it spinning. In truth, no force is required because a fundamental property of mass is that it maintains its state of motion in the absence of external forces. This property is called inertia.
Why can't we have thousands of Dereks just roaming around the earth asking people questions? It would get people to thinking more.
We can, they just won't all be called Derek. Let the followers of Derek rise up and begin asking!
Become Unique.
#revolutionisnow
You've anacted a force on the world Derek, a force for change. To bad ignorance has quite an inertia.
Well, could you imagine walking up to someone and asking them science questions with a camera in their face?
Veritasium: "Why does the Earth spin?"
Earth: "Can't stop won't stop!"
LMFAO
Game Stop
@@Halifax888 LMAO winner.
Can't stop. Won't stop. Game Stop.
Earth: "Somebody stop meeee!!"
The Mask: "I'll teach ya"
Never ever has it ever moved.
Money makes the world go round was the obvious answer and no one said it
I thought it was fat bottom girls.
Kayle Lang no... that's the rocking world
Kayle Lang Lol...
Pata Fea I would have also excepted boats and hoos and or strippers and blow.
Is the earth spinning ? Kkkk prove it
"To do with it, Gravity has nothing!" - Yoda
Genius 😂
Gravity has nothing to do with it 🤣🤣
Lol.. Example of bad visual hierarchy! 😁
If gravity isn't involved why doesn't the bodies of water not spill out ?
Ah, but why was the dust spinning in the first place? (The answer is that the net angular momentum of a huge mass of randomly-moving particles around the center of mass is unlikely to be exactly zero, i.e. a mass of randomly-moving particles has a nonzero (albeit diffused) net angular momentum about its center of mass. Tidal forces and cataclysmic meteor impacts notwithstanding, the net angular momentum of the system will be conserved independently of its spatial distribution of mass. Consequently, as the particles coalesce under the force of gravity and assume the same motion, the conserved net angular momentum of a large, slowly-moving dust cloud transforms into a dense, relatively fast-spinning planet).
@@buruk3157 facts
@@buruk3157 That is why people are easily fooled. I can assure you explosions doesn't cause dust to come together to form a ball.
What caused that random motion
Here's a question
What came first gas, liquid or solid?
I think liquid.
And the other 2 a just variations of frequency wavelength and hot cold pressure. And the Bible says so.
@@spectrumofcreation5679 the Bible says so is not a good proof of anything scientific.
It's fun to look back on these early videos and see Derek's development. This early video is pretty critical of participants than later videos, which isn't a great strategy for people who also didn't know the explanation and watched the video to keep an open mind. This is not a critique of Derek, but rather, highlights the evolution of his work -- and that effort to improve the flavor of these interactions is something to be commended.
How did you conclude that it's not a great strategy for people who didn't know the explanation? I did know this basic version of the answer beforehand, but generally I love getting asked questions like these without knowing the answer, and I think Derek handles people's ignorance extremely well. He has no urge to swiftly correct them, nor does he judge them for what they say, he gives them clues when they're stuck, and he clearly shows an interest in their learning process and empathy toward their struggles. I can't imagine a better teacher. Unless you're talking about the video subtext which I suppose can be perceived as judgement and I agree that wasn't optimal.
@@Muskar2 Pretty sure he's referring to the editing
true
This IS a critique. Poorly presented video. Down to the 30 second black fadeout at the end
"Because of inertia" is not the correct answer to the question "Why something is spinning". Inertia could be the correct answer to 'why something haven't stopped moving (or spinning) yet'.
stuff stops moving because of friction not because the lack of intertia. Photons dont stop, but they have no mass - meaning they have no inertia.
@@zagyex Well... My brain hurts now.
Exactly. Why was the dust spinning? He's more thorough now. And less full of himself. I guess he's both matured and gotten smarter.
The earth is not spinning and its flat use ur head idiots, look out a plane and let me know if you see the earth spinning 1000 miles per hour, yall would believe if they said we were living on a living donut
@@Mrgamezombie1 You made me laugh so hard! Thank you.
My bumper-sticker-sized way of thinking of it is this: The Earth keeps spinning because it has no reason to stop.
Daruqe Well, that's pretty much how inertia works. It is good intuition
Luka Popovic
It’s not pretty much how inertia works, it IS how inertia works.
you are basically re-defining law of inertia
Then why did it start spinning??🤔
@@anjaneyacharypabboju3682 Because meteors, planets and all stuff in space hit each other all the time leaving them spinning.
Earth spins because it was formed out of dust that was spinning. Why was the dust spinning?
+Ajay Kumar it has do with the violent creation of stars.. not a good answer but a start lol
So gravity did have something to do with the spin :P
+Ajay Kumar hahaha
+Ajay Kumar good point
Walther WagDoodle thanks mate, i know why it does. i just wanted to point out that gravity DID have something to do with the spin. if you note, he says gravity has nothing to do with it XD
"Is it because of inertia?" (Me)*there getting somewhere!* "that every action has an equal and opposite reaction?" *facepalm*
Not knowing the difference between "they're" and "there"
*facepalm*
@@jwwjjf23 😂
😂😂😂
Wrong
Ok
I had one of those balls that was 4" in diameter, accurate to 0.001 Inch (about the same accuracy). When it was first installed it rolled perfectly. We had to do some plumbing work under it and when we reinstalled it, I used a VERY accurate machinists level to set the base. We were shifting shims with a differences of 0.0005 inch (0.013 mm) until the base was leveled to my satisfaction. The ball would not spin. The manufacturers (I suspect the same as the ones who manufactured your ball - there are only a few and they are the best) said that they never expected anyone to level the base that perfectly and it required a small amount of misleveling to operate properly.
Nasa is master of deception.
but gravity was a major reason why the dust was spinning in the first place (think of an orbit, now if the orbit came to an end, and the 2 objects collided, the one that was going around the other would cause the combined to two to spin the direction they came from, hence it's spinning) so Gravity is why it is spinning, Inertia is why it is "Still" spinning today.
Inertia isn't a force, it's a property. Therefore, Gunnarwahl is correct. As he/she said, gravity has sparked the change and is the main FORCE behind the colliding particles. Inelastic collisions between particles CAUSED rotation because they must conserve angular momentum. So when someone asks caused the Earth to spin, a correct answer would be GRAVITY and CONSERVATION of ANGULAR MOMENTUM. Why is it still spinning? The earth's inertia, aka property.
Pencilcheck....you're response is just plain wrong on too many levels. Screw these theory arguments, your attempt at correcting someone only shows your lack of understanding of basic physics concepts.
The guy doing this video should be just as embarrassed for doing the same thing to those people.
Gravity is inertia. Inertia is a kinetic force. And the effects of inertia can be felt. Swing a object around you on a string. The inertia force created will want to keep going the direction you sound it when you try to stop it. But someone just outside the reach of that object will also feel the inertia force as it whips by them.
And if it's not a force explain how a yoyo spinning at the bottom of a string really won't change axis very easy. And then look up the sea keeper and understand how that works. It creates a inertia field the keeps a boat from rocking in the water. It will Bob up and down but won't tip side to side. There are so many different inertia forces going on all around us that. Every atom has electron inertia force. The planets have inertia forces on and around them on top of different inertia fields that effect each other.
The next major break throughs are going to be in technology working on these principals.
One thing about non man mad things is there is a major pattern from a micro scale to a macro scale. The laws of energy.
Up next! What forces make the initial inertia force in the begin with.
God. When he speaks things happen. Well if you really think about what is in all matter. It kinda makes sense. God is not man so when he speaks it's not the same as when we speak it's much much more. So the cosmic vibrations created by God speaking. Made the first atoms. That cosmic static turbulence. Created all inertia forces that are like a glue holding atoms together and making more.
I don't know if you believe in God.
But hey that's where I learn most this stuff is asking in prayer and then getting answers in ways that I understand. At least that's where I think the answers are coming from.
Where did the dust come from?
@@timoaks9633 The dust came from the accretion disk that formed during the formation of sun.
But what is gravity ? xD
The end isn’t enough to fully explain why. It’s not only that the dust was already spinning and inertia kept it in motion, the largest factor to its spin, especially currently, is due to collisions with other objects. All objects in the Universe started as countless numbers of different dust particles at least near infinitely small. Gravity caused them to collide and thus grow in size, and different speeds and angles of collisions due to gravity caused them to all have altering rotational speeds and directions.
That's an interesting idea. But shouldn't it be that since all collision angles are randomly distributed, the net result be zero? So zero spinning. But all planets that we know of, have a large angular momentum.
@@RishabhSharma10225 Even if the net result of all the collisions in the universe be zero (which im not sure of), we are not looking at the whole universe, just one piece of it
@@RishabhSharma10225 in average zero yes. but the probability of exactly zero is zero.
That doesn't answer anything. Why didn't the various particles collide and spin in opposite directions, thus canceling each other out?
They do collide in all directions as the mass of dust accumulates (so gravity is really the original force here), but the likelihood that all of those tiny collisions will EXACTLY cancel each other out is practically zero, so instead a slight spin begins in one direction or another, and once the spin begins it becomes slowly more likely that each tiny collision in the accumulating dust will reinforce that spin. Gravity continues to collapse the spinning dust inwards towards what has become an axis of rotation, and the conservation of angular momentum speeds up the spin, like a spinning ice skater bringing her arms inward.
Actually, since the Earth was formed out of an accretion disk, gravity has everything to do with it. The Earth spins because the accretion disk gathered spin as a consequence of the gravity coming together. So the Earth does spin because of gravity--it doesn't STOP spinning because of inertia.
Technically correct, the best kind
:O
I believe gravity is a result of compounded inertia forces!
And all atoms have a electron inertia force with different speeds and amount of electrons you end up with different density fields of inertia that in turn creat different elements.. the law of inertia is in every aspect of life and matter!
Now what is static electricity?
I am starting to think that it is electron inertia fields.
@@spectrumofcreation5679 Well... You're correct in a way, that gravitational pull is a consequence of such property of matter as inertia. Massive objects create curvature of space-time, thus creating gradient of rate of passage of time ( 3 "of" in a row, yay!)
Because of this gradient and inertia path of objects bends as if there was an actual force. (but in 4 dimentions those paths are still straight lines)
Wrong
Really enjoyed watching this, thank you. These videos are very interesting and helpful. More please! :)
Technically we can say that dust which came together was being pulled by gravity. So gravity DID have something to do with it.
the dust could have come together without spinning, so no, gravity had nothing to do with the spin itself. You can't say "the sun has something to do with it because the earth wouldn't be here without the sun" either.
@@jemand8462 The dust may have been moving almost imperceptibly, and in many different directions over a huge area. As gravity coalesced the dust into a disk, and then into a sphere, the gradual movement of the dust over a huge area was concentrated and combined into the compact spherical earth. Like a ice skater pulling their limbs in to their centre to spin faster. So yes, gravity certainly did have something to do with the spin. If you take any two objects with any two random velocities, and make them attract each other, it's almost impossible for them not to spin before they collide. If the space is large enough, and the velocities high enough relative to the size of the objects, it becomes increasingly rare for them to ever come into contact.
Just a big thank you for introducing your channel to the world. You have definitely made it a better place!
Derek is a much more patient man than I. I for one am glad he does these.
The last minute of this video, you've probably single handedly changed that kids life forever! Absolutely fabulous.
"Why does the earth spin?"
"I don't know, gravity?"
A Chavan Atleast he admitted he didn't know
These videos makes me feel like a genius...
Please could you explain the mechanism that keeps the granite ball in the video spinning? The engineering is impressive. Thanks
So why the dusts were initially spinning?
Ahmad Talaei because in an early state of our solar system there was an extreme amount of dust (more like giant rocks up to kilometers wide) was orbiting the sun. as much of this dust collides it becomes big enough in mass to slowly attract more dust and because much of the dust was already moving in a direction (becasue its orbiting the sun) the dust close to the (early state) earth starts to orbit the earth instead. the dust spins closer and closer to the earth the same way clouds of dust spins around a black hole until it reaches the black hole. so all the collisions coming from mainly the same direction made the earth rotate on its own axis. hope this was a good enough explaination :)
Simple explanation: all dust particles were in straight motion but due to gravitational attraction, start experiencing sideways force and eventually start rotating each other due to centripetal force.
What makes them think it was dust in the begin with? And where did the dust come from?
Here is a question
What came first liquid, solid or gas?
If it was a where did that come from. Like wise where did the gas come from?
I think it started in liquid state. Seems you really don't get gas straight out of solid and you don't get solids right out of gas. The liquid is the middle ground and well you have more variations to go to from that state. And that's also what the Bible says water.
@@spectrumofcreation5679 But you cant get liquid with out gas.. Because water is made out of 2 gases Hydrogen and Oxygen which are gases
@@chetanphoenix actually they started to rotate due to inertia
Not Centripetal force and Centripetal force is created when the object is spinning
You're doing a good job educating people...keep it up !
The man in the green was talking like he has mastered classical mechanics.
he's just keeping up with Derek, but its good to know that at his age, he still knows basic physics. Probably 20 years from now, you won't remember a thing.
You still have to preserve momentum though, so the momentum of the particles and radiation still has to be accounted for after it hits the atmosphere.
Oh boy, has this channel come a long way!
i've just started secondary and i am obssesed with this. most kids would think this was boring but i find it really interestring
i agree and relate to you sooo much. I love these types of videos but i got no one to share it with. If u get the notification of this reply then pls reply me. We might become better friends :)
Does someone come and spin that every once in a while to keep it going?
I can't imagine that someone wouldn't do that once in a while.
probably because of air friction there is a force that tend to slow down the rotation
I would guess that he aligned the sphere and made it spin in the "correct" direction for the sake of this video. There's a similar spere at Disneyland and it's fairly easy to get it to spin whatever direction you want, if you work at it for a bit.
1st law of newton object will keep going for ever if no outside force is aplied. there is no air in space so no friction to slow it down so it keeps moving at the same pace
Maxim Rahl Strictly speaking there is no friction from _air_. There's probably a negligible amount of friction from space dust. But there's an appreciable amount of friction affecting the rotation from the moon. Tidal forces try to deform the Earth in line with the Moon, gradually slowing down the Earth's rotation. The Moon succumbed to those forces a long time ago and that's why it keeps the same side facing us at all times. If you go back a few hundred million years the Earth's day was shorter, adding up to around 400 days in a year. That slowdown is mainly because tidal friction due to the moon.
The main reason people don't know why earth spins is definitely because nobody every made them curious about.
All they thought they had to do in life was graduating, getting a job, taking care of their kids and then dying.
Well that's overly generalized and unusually cynical
Thankyou very much sir, I searched it for about 1 month, but everyone says about what happens when earth stop spinning, and no one can actually explain why actually the earth is spinning? so most thankful to you sir
I love this video!! Besides all the great information, the video has a street magic vibe :)
Please don't. Derek is DEAD WRONG. This is something I would expect from a kid who failed all his middle school physics exams.
When you look at a chunk of the Earth, if there were no gravitational force, it would continue flying straight and would move away from the Earth. Have you ever tried spinning a wet ball? That's what would happen to the Earth. However, if you had some centripetal force (in the case of the Earth, gravitational force), the ball would continue to spin, and the ball would stay a ball.
The granite structure there continues to spin because chemical bonds provide the centripetal force.
He literally says the Earth continues to spin (i.e. not "maintain its state of motion") because of inertia, which is so hilariously incorrect, LOL
One thing I haven't thought about yet is that if a big meteor hit the earth it would also change the rotation.
So in case we survive the days might get longer or shorter after the event which would have an enormous effect on all living creatures
Good question. The earth spins at the rate it does due it it’s Moment of inertia. This can be seen when you spin on a desk chair and move your arms in and out. So when mass is added or the masses moves closer or further away from the centre of rotation, the angular velocity will change. Hope this answers your question
According to a theoy it has happened in the past when earth's twin planet collided with the earth and therefore the earth spins at an angle
If I was asked this question, I'd be confused too. Do you mean What keeps it spinning? What started it spinning? Why did it start spinning? Why is it still spinning? The questions kinda ambiguous, if you want to know why it's spinning, the answer is because something made it start spinning. What does this question actually mean?... Anyone actually get it?
Simple earth does not spin.. There is no evidence for a spinning earth. Secondly you are confused because the large ball here is spinning artificially, but he tries to explain a different scenario then that of why that black ball is spinning
Jon Deveaugh "There is no evidence for a spinning earth." What about photographic evidence ?
Jon Deveaugh ikeppsovapiramida
You are a smart commentator!!
He asked a question and you asked even more to understand his question to answer it.
Which tells me you have a lot of understanding to sort through before throwing a answer out there. The best kind of person to have in-depth conversations with!!!!
My question to you is
Where are the many places that see the laws inertia at work?
Think macro and micro. Think about the very concept of kinetic energy ( seems that what inertia is).
Next question
What happens when you have a compounded inertia fields with different axis all with the same center.
Remember the effects of the eye of a tornado. That is one dominant inertia field.
Once you have that built in your head what happens if there is a multi layered ball with different states of matter making that ball?
What would be the calmest place in the whole concept.
In my opinion gravity is a result compounded inertia fields.
But hey I could be wrong. Nobody has ever told me it was or wasn't. It just makes sense!
And if someone can prove it. They would most likely become very wealthy because the amount of technology that will result from this understanding.
Think about space travel. One of the problems they have is traveling to fast will destroy the body. Well it's like the eye of the storm. Creat a compound inertia field and you pretty much make a atmosphere to protected against the g force and multiple other things.
Figure out the statics of electron inertia fields and discriminating control factor and then you could also make a denser field, like a force field or shield.
But back to the question up there
Where all can you see the laws of inertia in effect?
@@jondeveaugh615 oh no flat earther alert
That large Globe spinning and floating on water is just so marvelous prodigious and impressive. So is Derek Muller.
thanx for the video.
The earth spins slightly off its axis due to the combined gravitational pull generated by the gigantic balls of these guys.
(joke)
I felt pretty stupid for not knowing why it spins. turns out, most people don't know it, nice.
They dont teach much about what they say this earth is because if you knew what they claim everybody would see what a bunch of nonsense they have made up to hide where we really are.
@@davidsandall Where are we then, exactly?
@@angusheath5321
I have speculation and if I had nasa's 22 billion dollar annual budget I could tell you. I know we are not where nasa tells us.
@@davidsandall Why isn't anyone with 22 billion dollars or more not put a single dollar into this, even though they have zero affiliation with NASA. Elon Musk is in competition with NASA, has beliefs that were in a simulation, and with his hundreds of billions of dollars has gone nowhere with that idea.
Also, what exactly is your speculation. Simulation? multiverse? or are your distrustful of NASA and assuming it has to be somewhere else, but you are not sure of where?
@@angusheath5321
I believe a group of people "control" the world and also control everybody who is rich in the media. Musk, Branson, Gates, and so on are controlled it seems to me. Nobody that can't be controlled would ever be allowed to become rich/famous. Musk sent a tesla into space and a rocket to Mars is ridiculous. It's provable that what nasa says is lies and I see no proof of a spinning earth.
2021 this editing spoke volumes, loved it.
The question of what started it spinning is a bit misguided in that zero rotation (angular momentum) is not some default state. It seems that way because we see few things around us spinning unless we set them in motion. That's because there are torques such as friction opposing rotation. In the case of the earth, the opposing torque is very small compared to the inertia, so the rate of slowing is very small. This is mainly due to gravitational interaction with the moon, and it tells you how huge the inertia is that this effect is so small. Yes, there would be some specific forces resulting in a net torque that would set the forming earth into rotation, but it would have been a miracle if there weren't.
"there is no force." Damn it.
There is though. The force that you exert to learn. Keep it up :) we're all trying our best!
Except Trump supporters and anti-vaxxers... Yea.. they aren't trying.
"The Earth does that without any forces, this (gestures giant globe) does that without any forces".. somehow I find it harder to believe there is no force acting upon that globe to keep it spinning. Otherwise, friction would cause it slow and eventually stop. While the net force may be zero, there are forces at work.
The friction from the water holding it up is almost zero, so it is not incorrect to state that the forces are balanced and the granite globe has ~0 net force on it
Yes. Maybe we haven't figured the real reason of every planet, star, black hole spinning. It is hard to believe that inertia is the cause.
I am addicted to you and your videos !
Want to meet you once in my life !!
I grew up about 20 km away from the locality of the company that made this fountain. I know this type of fountains for over 30 years, now; and still it's always fun to play with. :)
how does a solid object the earth spin at different speeds and does not tear its self apart.
its not like the earth has movable sections because it does not .
+Carlos Gomez That's because all matter is attracted to all other matter, that includes all matter on Earth, the larger/or heavier the mass the stronger the gravity, the attraction must be stronger than the momentum and that's why it doesn't pull apart,
But none the less you may be onto something there because black holes are probably spinning at a faster rate than gravity and they're probably actually ripping everything apart, instead of everyone's theory of pulling things in (which I think doesn't makes sense at all)
+Carlos Gomez earth's crust has tectonic plates which move
the surface doesnt rotate at different speeds, it moves at different speeds. speed is just the measure of how much distance is covered in a given time, rotation is how many rotations an object will complete in a given time. by the north pole, a given spot on the earth will complete one rotation every 24 hours, as will a spot on the equator. the spot on the equator has to travel 40000 km to complete one rotation whereas the spot near the pole might only have to travel 10km, say. thus the spot by the pole is travelling at (10/24 km each hour so) 0.41667 km/h, and the spot on the equator is travelling (40000/24 km each hour so) 1666.66667 km/h but both parts only complete one rotation.
as i understand the rotation but is the physical earth that spot you mention traveling at 40,000 km or is it the atmosphere.
+Carlos Gomez I assume turtle was talking about a spot on the ground, not that it really matters, the atmosphere more or less moves with a ground beneath it and with the ground moving at 1700km/h any wind would make little difference to the speed of the "spot" of atmosphere.
But why was the dust spinning?
Because of the way it collapsed.
ha, the question I wanted to ask and yet it still has no answer
i know why, it's because of differing densities in different areas of the clump of matter that formed our sun and solar system
but a systems angular momentum is conserved so if the dust wasnt spinning in the first place then it wouldnt just start
That's the point I was clumsily trying to make earlier. The nebula isn't a closed system. By interacting with other clumps of matter earlier in the universe various parts can start spinning as long as the total angular momentum doesn't change.
My explanation would have been:
Before the solar system formed, it was a slowly rotating giant "cloud" of gas and dust. Due to gravity it began to collapse and because of conversation of angular momentum its rotation accelerated. Then the cloud collapsed completely and formed the sun, and the accelerated rotation of the remaining gas and dust caused it to be "pushed" into a flat disk orbiting the sun. Due to small irregularities in density and due to gravity planets formed. Again, because of conversation of angular momentum, the planets were rotating and since there's no drag in space, because of inertia they kept doing so until today. Another factor for the earth's rotation might have been the theoretised "Theia", a planet colliding with the early earth. It's a model for the origin of our moon
I watched this video approx 9-10 years ago and now again it came in my suggestion....wish i could be timeless like this video. oh my lost time.
This video did not explain why the earth is spinning, it only makes the first step towards an explanation at the very end. Normally, you go much deeper!
what else do you want know regarding spinning of earth? Its clear earth formed as a result of mass accumulating during the formation of solar system. In other words debris revolved around our sun and finally formed planet known as earth which retained its motion of rotation and the cause is explained in the video.
Inertia? Shouldn't that be momentum?
no
momentum = mass x velocity. can be zero. inertia can't.
how much water pressure does this thing need in order to keep it floating?
Hi Derek, thank you so much for making this video, I think it perfectly explains why does the earth keep spinning. But I am still confused about why does the earth spin in the very first place. Any help?
I never had that imagination that cosmic/planetary dust would have caused Earth's rotation. I had a notion that Earth's spin had to do something with the gravitation force of the Sun.
No it's all clear!! Newton's 1st Law of Motion
Space is almost frictionless 😜
Thanks Derek
So theoretically it is possible to stop the earths rotation? Could be an interesting topic to a video.
+Le Šalc Vsauce covered that one! Check it out.
+ryan bresnahan which video?
+Guilherme Almeida just look up "What if the Earth stopped spinning?" Im pretty sure the video will come up first.
thanks
If earth stopped spinning, everything would start flying around in the east direction. Even mountains will get ejected, fly off and land somewhere far in pacific. Do we really want that?
I'm watching this 2021 and wishing that you can do these things again... Talking with people... It's fun really
I really like the drunk guy you interviewed, lol. He's trying to get there!
how do you keep a straight face talking to people like this
omg i feel a lot smarter now
when your science teacher sends you to this video too for homework😑
@Tod Wilkinson how?
so if I mount a rocket of some sort to the ground ejecting in the opposite direction of the earths rotation, could I theoretically slow down the earths rotation?
And just like all scientists, you still didnt directly answer the question.
All scientists?
People are SO stupid!
Inertia applies here as well. If a force of knowledge is applied on them, like this guy does, that will help them get out of the stupidity gradually:P
Sravan Appana
Lol interesting way to see it, though, I wouldn't call them stupid, in fact, that's not a "Law" that many know that easily off the top of their head. He just got things mixed up, and there for you can account him for being stupid. Someone who is stupid wouldn't say anything close to that nor would they get it after it was explained time and time again. It's not just that which makes them stupid, what get's them to be STUPID is if they are rejecting any evidence Derek has said and they disagree and try to promote their own reasoning to which clearly isn't correct. Excuse me if that was a load of jumble to you, I tend to ramble, so I do hope that made some sense.
That is not the point of these videos. it is not about people being stupid or him being smarter. It is about helping people who want to learn.
If you keep going though the list you should come across the one where he explains his methods clearly and using math/statistics.
Aaron Reichert I saw that. My point still stands.
The main impediment to accepting inertia is that people are so intelligent, not that they are so stupid. It took a very long time, almost all of the history of mankind, to strip away all that intelligence, to get at the concept of inertia.
the young kid at the end gave me a real positive feel of hope,i wish him to continue on the scientific path !
True
curious, what about frictional and magnetic forces? Won't they slow down the rotation?
Does it not then follow that if the mass changes then the speed of rotation will also change? If so has the mass of the earth changed over time and has the speed of rotation changed?
So can we use it to make something working make something to work rightand make something to faster and make something again to produce electricity?
OMG! This video looks as fresh as new. Can't believe it was 10 years ago.
Can it also be due to the convection currents in the earths core formed by the larve, which causes the earth to spin?
Derek : Physics Question
People : G R A V I T Y
My thougth was/is that it started spinning at some point when it was created and there is just simply nothing to stop it
What if we theoreticaly stopped the earth from spinning say a hand came out and ended the continuing intertia. Would it just be a standstill magnet? What would that theoreticaly impact in return?
It's like if something is spining or moving then it tries to mantience the state of spining or moving. right ?
You can put it that way, but if you ask me it's better just to say that it requires a force to change the state of motion of a mass
Maybe bigger chunks of dust were just rotating towards each other due to gravitational pull at a point and then they came closer and formed a bigger body and kept that motion due to inertia. Cuz there was no external force that stopped it.
Idk
What about the tidal forces between Sun and Earth? I imagine that this force actually tends to stop Earth's spin, eventually locking it up in a forever-long day/night spin. And what made the proto-Earth particles to spin?
Millions of years ago the Earth spun at well over 450 days per year. Tidal forces have slowed it down. The Moon used to be closer and had more of an effect back then, therefore slowing the Earth's spin. But as the Moon gets farther away, I think like 3 inches per year, (i will have to look that up but its something like that), it has less of an effect. I think in the long run it wont have enough power to stop the earth's spin all together.
Gustofursaurus Rex according to present laws of physic . Egyptians or Sumer societies has different ones .
So before the impact with another planet that formed the moon, the spin must be different as it is now? Right? It must have slowed down or sped up?
Of course. The inertia was acted upon
POV: Derek dunks on a bunch of kids with his knowledge of inertia
What i'm asking myself is
how does the core of the earth that is submerged in liquid metal which introduces some kind of friction not stop spinning at some point?
In what direction does the inner core spin and if the inner core doesn't spin, how are we generating magnetic fields?
Well, this is actually the case. Earth will eventually stop spinning by a number of reasons, one of which is friction between its layers.
( Also, magnetic field requere energy to exist, so where does it come from? Correct, from angular momentum of Earth )
understanding your point, does this means that hits from asteroids can alter our day's measurements? Also, believing that the earth is moving counter-clockwise if an astroid his the earth from a clockwise tangent(assuming that this is a huge asteroid and posses the same momentum as the angular velocity of the earth) does this mean the earth would halt immediately?
How is it possible to have an event which conserves momentum but not total kinetic energy?
Since Ek = (P^2)/2m, how is it possible to have an event during which the total momentum of the system is conserved but not the total kinetic energy? Say for example in an inelastic collision between two cars, at face the most obvious way seems to be for mass to change but isn't the total mass of the system always conserved if relativistic effects are negligible?
Does somebody know where I get the yellow sweater the guy at 1:40 wears?
When the big bang happened and stuff was ripping apart, I believe due to collisions all planets formed, took to spinning at a particular angular velocity at their respective orbits. Now those orbits are maintained due to gravitational interaction but the rotatory motion remains due to the inertia of motion as there is nothing to resist that in space.
Can you rotate the globe upside down or is it mounted on the axis?
An object that is moving due to inertia can be stopped by an external force. So im wondering, how much force is required to stop earth from spinning?
didn't know this before... know it now... had my guesses... mind blown
Did you do something funky with the thumbnail? Hahaha why is this on my feed?
Inertia keeps it moving, but it is conceivable that the spherical cavity that holds the granite ball is not perfectly spherical and hence concentrates the water flow into one direction over another. That would result in friction that would accelerate the granite ball. Inertia would keep it moving but the water flow would make it spin and determine the direction of the rotation.
The check that Derek should do is to completely stop the ball and then wait for it to either remain without rotation, or to start spinning.
My suspicion is that the spin is more due to the water spinning it than due to its perfect inertia and the one guy that gave the granite ball the spin a couple of years ago.
well inertia makes thinks in movement tell it crushed with something so it movement change or it stop or slow down or maybe speed up ,, according to that so how it was the earth turning before it crushed with the meteor 3 time ????
Of interest to me is how rotation is "fractal" since the earth spins around its axis, the planets spin around the sun, and the sun spins around the galaxy. Where did all this spinning come from in the first place? And how would a single global angular momentum split into things spin at several levels of zoom? If you had a giant top with smaller tops spinning on it, do those contribute to the big top's angular momentum?
I 💖 West Vancouver … love going there at Ambleside Beach & seeing that plus so much more.
Video:why does earth spins
Me:BECAUSE EARTH SPINS ON ITS AXIS MAKING HALF COLD AND HALF HOT
Where is the beach located?
What did the dust kept spinning around? some kind of point source of gravity or what?
So does it mean if a massive asteroid hit the earth, countering its counter clockwise motion, means it atleast slow the spinning motion of our planet?
Yeah
Where can I get spinning dust?
Derek's video editing skills have improved
So, does that mean all planets will soon or there are ones which are formed using different process than spinning dust?
Dude! Finish the video! You got me to the end ... what caused the cloud of gas to rotate in the first place? If I have a 1 gas 'unit' and add another unit to it, assuming the vector of addition is not zero, I understand that that a rotation will occur. But adding more units with random vectors should result in essentially no rotation. The answer that "gravity did it" is not acceptable. Gravity by itself has only one vector, towards itself. There is no reason to have a rotation unless the "gravity field" (?) is somehow twisted. That is fine if I look at the field resulting from a rotating body, but it doesn't answer what the initial state was.
Here's a topic for you. I have a sink in space with the drain pointed to an ideal gravity well (just the well - no pesky planet at the bottom with a rotation to drag space time). Now pull the plug. Will the water flow down the drain with a circular rotation?
Hey, I live in Vancouver! I should go see the spinning sphere myself!
@Chiara Nakamura Cool, they said it was in west Vancover B.C. After reading this, it's probably irrelevant because you have probably already went to see it anyway, haha!
The conservation of angular momentum, the Theia collision in the Hadean more than likely has some major roles to play. Not to mention the spinning planetary disc the earth originated from.
Hell yes! I only had to go back 11 years to find a video with something I could explain; It's inertia!
Yes, as that is why the Earth keeps on spinning but does not stop. However, the reason the Earth started spinning is not inertia, but instead from the formation of the Earth, when lots of small spinning objects collapsed together to form a large spinning object, in essence.