@@kaan8964, yes. I took a linear algebra course, but on my undergrad studies we never saw any further application for cross product other than Lorentz Force.
@@loes3000 imma level with you...I don't know I think so lmao I was hoping the other guy who said he got it would explain it I just happened to say that
I always played with bike wheels as a kid. Didn't understand why it would have a weird force feeling when moving a spinning wheel. Angular momentum. Thank you!
My high school physics teacher showed us this exact demonstration to us. He also used the same rotating platform, sat on it with his legs crossed. He then held a textbook in each hand. When he would bring textbooks close to him, he would spin faster. When he would hold them out, he would spin slower. Because the radius changes, causing the moment of inertia to change
Today I'm a Physician but I still remember being taught this lesson in High school Physics. My Physics teacher at that time volunteered me to teach the entire class this lesson because I was the smallest guy in the class and would be able to keep my feet off the ground as I sat on his swivel chair and got spun around by the spinning wheel.
@@elimyemily1087 i have, i hung it from a rope Nd with the other end of longer shaft nd it was moving with an angle with vertical the more the speed the greater is the angle
@@critisizerr245 It is impossible to spin without the free base wheel. If he spun without the free base wheel, physicists will freak out not knowing what the hell happened, and will most likely spend most of their time seeking answers and reasons how the hell did it happen.
Question 1: What would happen if the wheel is held further away from the body? Question 2: If the angular momentum was very high, theoretically would the person be forced to spin and/or have a tendency to move towards an angle? Question 3: If the weight of the wheel was higher, would the angular momentum be higher? Thanks in advance folks!
In regards to number 3, yes, angular momentum is equal to I*ω. Greater mass means greater moment of inertia, assuming velocity remains constant, its angular momentum will be higher.
@@batzorigvaanchig6358 In regards to question 1, if the wheel is held further away, the moment of inertia of the system about the base plate"s axis changes (its the only possible axis of rotation), since moment of inertia is directly proportional to the square of the distance from an axis. Hence the guy holding the wheel would rotate with a lower angular frequency after flipping it.
The thumb rule is just used to find out the direction of angular momentum We choose sign acc to our convienience Sometime outwards is positive ,sometimes it can be negative
I hated school was aways getting in trouble but luckily in high school Mr Colicott was my physics teacher he was so enthusiastic and passionate about science especially physics, he always tried to make our lessons fun and interesting I'm grateful to him because he introduced a love of learning to me that has carried me through life. Videos like this remind me of those lessons so cool to watch them with my son and then talk about it. He's still young and was already withdrawing from school work but stuff like this even relatively simple demonstrations like these make his eye light up like he's seen a magic trick. Can't wait to hear what questions he comes up with for me after we watch it. Excellent clear concise explanation and demonstration. Awesome stuff.
i understand but i dont understand why it moves in one direction. i understand what he's saying but dont get it. it's just a wheel spinning. i dont get how the starting position of the wheel would make any difference in rotating. because flipped or not, it's just a spinning wheel.
It all depends on how the system starts. Let's say that the system starts with a +L, so it starts at a counterclockwise rotation, and when we rotate it, it's now on a clockwise rotation, thus -L (you can see it at 1:35). By Newton's postulate of conservation of momentum, we know that the angular momentum of an isolated system tends to be conserved, you can imagine the isolated system as him, the wheel and the spinning base. When he changes the direction of the rotation, the system behaves in a way to conserve the initial state of the system which is spinning in the opposite direction two times faster to get to the initial state as he explained here: 1:47. Lastly, in summary, if we start the system as -L and then change it to +L, the system will try to conserve the momentum back to -L by spinning with -2L (+L - 2L = -L) and, analogously, if we start as +L and change to -L, the system will try to conserve the initial state by spinning with +2L(-L + 2L = +L).
Benim kardeşim eyvallah yayınlanması çok uzun zaman alıyor 1 yıl önce çevirmiştim acaba yayınlanmış mı diye bakmaya geldim ve yorumunu gördüm yardımcı olduysa ne mutlu bana
I am lost, why is he not spining when the system angular mometum is -L ? does it mean that if he throw away the spinning wheel then the turn table will actually spin anti-clock wise because 0 - L = -L , meaning there is a default angular mometum L if he standing on the turntable without the wheel?
When the wheel is spinning in it's own at -L, there is no need for him to spin as the only force that has been applied is to spin the wheel. When he rotates the wheel and makes its angular momentum +L, there needs to be a correction equal to -2L in order to conserve the wheel's overall momentum, thus it spins him.
Norman xu, i agree, why doesnt he spin the oppisite way, when he flips the wheel over? Its really an unreasonable thing to watch. I guess ima make my own table to turn myself on....i mean, to rotate my self while holding a bike weel. Anyways, i understand whats happening, but the lack of rotating the other way pulls me to want to make it myself. Good vid. Good question.
And the claim at the start of the video that it's Newton's third law that makes him spin is also wrong. When he flips the wheel over, the reaction force is a torque that would rotate him about a horizontal axis through his chest and turn him upside down, not a torque about the vertical axis through his spine that rotates him on the turntable.
1:30 no external torques and not external forces, or net external torque=zero When you dive, there is an external force but the angular momentum is conserved.
1:05. The moment of inertia depends on its shape and its mass. An object's moment of inertia depends on its geometry AND its density (whether or not the material of the object is uniform, etc.).
Whatever you're standing on has a direction it wants to move in more than the other. You should spin either direction based upon how you hold the wheel, but you only spin one way meaning the thing you're standing on has friction one way but not the other. That is kind of a big part of this demonstration that you leave out.
Kind of a silly way of saying it. "Friction one way but not the other"? He simply put one foot on the ground as he got on the thing he's standing on while holding the wheel. That way he wouldn't initially spin.
I think it's because he was standing still on the turn table with no angular velocity initially. (At the very beginning of the video he started to spin but the guy held him in place). So then the angular momentum is conserved with only the wheel acting in the closed system (the guy and the wheel).
Has anyone done this but the bottom is rotating (hooked up to a motor I imagine with a "free turning table on top") causing the person to rotate e.g: in a clockwise direction, and then the wheel either makes you rotate twice as fast in one orientation as the forces add or stop in the opposite orientation as the forces cancel out? I feel this would help demonstrate this point even better. Sorry if I'm not very clear with this.
This way you balance the y-component of the angular momentum. But if initially, you would hold the wheel vertically, so that it spins around a horizontal axis then the angular momentum is directed to the side. If you then turn the axis to be vertical, you start spinning in order to balance the vertical component of the angular momentum but what does balance the lost horizontal component of the angular momentum?
Agree - if the force is vertical in either wheel position what’s generating the horizontal rotation force (other than the initial force required to torque the wheel from one position to the other)?
Hey I've got a question. Assuming the system was in equilibrium at -L means that the an outside force created the equilibrium while you were already on the turntable, (you were on the turntable and then the wheel was spun up). and that's why you were only ever able to spin in one direction.
Angular momentum is not just conserved here because of your thumb rule It conserved because all the exteral forces acting on body like gravity is parallel to the axis of rotation
The set-up of this is fundamentally wrong. When he's standing on the turntable and rotates the wheel, it is correct that there is a Newton's-third-law force in the opposite direction. However, that is not the force that is making him spin: it's not the opposite direction. The opposite direction to him turning the wheel anticlockwise (as seen from our point of view) is a force that tries to turn him clockwise about a horizontal axis through his chest, not about a vertical axis down his spine. The reaction to him flipping the wheel over would turn him upside down, not rotate him on the turntable. The reason it doesn't turn him upside down is that the frictional force through his feet opposes this.
They had an example of this in a children's museum in Indianapolis 30 years ago - except it had a chair 🪑 that would spin on a pivot - faster the wheels spun the faster you would still but for the life of me I could never understand why I wouldn't go the other way
Unfortunately this video is again a hot-mess. At the final sum up you've reversed the directions that you had used in the explanations. In the demos you started with +L as the starting point then the flip to -L is what impels your body into the balancing rotation of +2L. YET, In the final summary, your body was spinning clockwise which meant -2L as a reaction to +L. Haha Oh dear, when you fail at the correction video.
Not necessary for the external forces to be zero. Although It must not produce torque. For instance gravity is acting here but it produces no torque as it is parallel to the axis of rotation.
Someone correct me if I’m wrong, I’m just a tradesman. But what he’s saying is that when the wheel spins away from the arm on the bottom; the force it exerts is wasted because it is unable to apply force to the arm on top. When the wheel spins towards the lowered arm though it is going with gravity which doesn’t hinder it? I really enjoy trying to break these principles down into facts laymen can understand.
Is this maybe also related with the fact that the front of the car is lifted up while accelerating? I guess the angular momentum is generated from the wheel to the left. Meanwhile, the entire system (vehicle body) tends to turn backwards and as a result 'counter' angular momentum occurs to the right and the total angular momentum is conserved. Is this correct?
what happens if you take the spinning wheel while pinning does it increase the speed that you spin.. and what if you are spinning opposite direction would it stop your momentum?.. hmmm
Torque. Same reason helicopters use a main rotor for lift, and a tail rotor for stable flight. The tail rotor is spinning counter to the main rotor. Without the tail rotor, the helicopter's entire fuselage would spin like a top, counter to the main rotor. Airplane propellers are a little different but do the same thing, they are called "tractor propellers". Planes have wings, a rear stablizer and use an airfoil. Their wings produce the lift. Copter's don't, they rely solely on the pitch of the main rotors for lift. Plane props spin but the plane remains stable and does not spin.
You can check out these two videos: 1) Maxwell's Wheel: ruclips.net/video/nVAqlZpkf2w/видео.html 2) Anti-Gravity Wheel: ruclips.net/video/GeyDf4ooPdo/видео.html
if its going counterclockwise nothing happens, but clockwise turn you clockwise, the question could be dumb but why dont u turn counterclockwise? why nothing happens one way, but the other way does? any help to understand? thank you!
right right right right. But why do you turn only when you flip the wheel? and do not spin in the opposite direction before flipping the wheel? My brain is broken
Soooo… that mean if he start with the wheel spinning in opposite direction, when he flip it he will spin in positive direction right? Or I am just stupid like I was in my high school’s physic class.
This demonstration doesn't really have much to do with angular momentum. Its more of the fact that you are producing forces on the turntable with your feet, and by shifting your balance when you flip the wheel. You could probably demonstrate this better with a spinning top on a spinning plate.
so the initial phase is -L, And on the spinning table he stand, every friction is neglected, and we change the wheel's rotation so the angular momentum is preserved?
So what if you turn it not spin it but flip it over the other direction do you spin the other way or would the wheel have to be spinning in the other direction? 😅
what if you keep flipping it the same direction (which will require you to switch hands after each flip) will you keep spinning faster and faster? i’m sure the wheel slows down but you can just spin it more and keep flipping, is it a speed unlock?
This is what young minds need to be learning presently and in the future instead of racism, hate, and lies about different colored people. Please post millions of these educational videos! I'm a 45 yr old single mother. And I approve this message. Teach our children about life not hate and animosity
The right hand grip rule is a theory part of the Electromagnetic Induction and it's based on "Faraday's law of Electromagnetic Induction". So yes, when a current-carrying conductor is placed in an external magnetic field, the conductor experiences a force perpendicular to both the field and to the direction of the current flow. This is flemings left hand rule
![Blox Fruits Dragon Rework Update [Full Stream]](http://i.ytimg.com/vi/EqDAp8udhm0/mqdefault.jpg)
This explanation exploded my mind and made me realize angular momentum is a vector resulting from a cross product. Well done, didn't know that.
So you know cross products but didn't know angular momentum was one as well?
@@kaan8964, yes. I took a linear algebra course, but on my undergrad studies we never saw any further application for cross product other than Lorentz Force.
Didn't u know the formula m(r×v)? From there you should have guessed it is a vector product.
@@251rmartin look at me I understand physics
Holy shit I feel like a retard when I read your guy’s messages.
Dude this guy tutored me and caught me up to 3 months worth of Algebra in like 2 weeks the guy is a genius but also incredibly down to Earth.
@Dark Eclipse lmao was hoping someone would say they got it ✌
@@yronvasquez1851 was the joke “down to earth” or am I slow?😂
@@loes3000 imma level with you...I don't know I think so lmao I was hoping the other guy who said he got it would explain it I just happened to say that
@@yronvasquez1851 Kinda creepy to think you can make a joke without yourself getting it
I always played with bike wheels as a kid. Didn't understand why it would have a weird force feeling when moving a spinning wheel. Angular momentum. Thank you!
me too, the weird feeling are cool hahaha
My high school physics teacher showed us this exact demonstration to us. He also used the same rotating platform, sat on it with his legs crossed. He then held a textbook in each hand. When he would bring textbooks close to him, he would spin faster. When he would hold them out, he would spin slower. Because the radius changes, causing the moment of inertia to change
Moment of inertia goes down (because the radius decreases), so angular velocity must go up. There is a great class by Prof. Walter Lewin on it!
Never in my wildest dreams have I ever imagined young Will Smith teaching me Physics. Great video nonetheless.
Will Smith😂😂😂😂
Gemini man
Fresh Prince of MIT
Homie do resemble Will smith a little with that fade 😅
@@hondobeans Go see an ophthalmologist because you're blind
this was the coolest angular momentum video I watched today
Prolly the only angular momentum video xD
@@hamzanazim5943 lmao true
To date*
@@hamzanazim5943 there are millions
Me as well
i love the simplicity of the demonstration.
I never knew that will smith belonged to MIT.
Didn’t take a long time to find a will smith joke lol
he do looks like will smith
Fresh Prince Reboot confirmed
not really that funny
*If they had just casted him in Gemini Man instead... the movie would have been more believable.*
Today I'm a Physician but I still remember being taught this lesson in High school Physics. My Physics teacher at that time volunteered me to teach the entire class this lesson because I was the smallest guy in the class and would be able to keep my feet off the ground as I sat on his swivel chair and got spun around by the spinning wheel.
Isn't that physicist and not physician ?
@@sachinfulsunge9977 No one is a physician in high school, but some take physics.
Now I know how to slow the Earth's rotation and make my days longer! Don't even need the rotating base, only need a bigger wheel... Thanks!
Lmao
I would love to know how you built the turntable. Very well done.
It's made with love
@@seasagar139 at MIT
@@seasagar139 nice one
I can answer that, it's pretty simple really. In West Philadelphia born and raised, on the playground was where he spent most of his days.
I have done this experiment with wheel but I never thought to stand on a free base wheel
Now I understand better
Have u tried with bike wheel that has a longer shaft on one side
@@elimyemily1087 i have, i hung it from a rope
Nd with the other end of longer shaft nd it was moving with an angle with vertical the more the speed the greater is the angle
Lol. Imagine if you actually spun without the free base wheel. You would freak out the whole physics community.
@@HelloWorld-ev9sg i didn't get it, please clarify
@@critisizerr245 It is impossible to spin without the free base wheel. If he spun without the free base wheel, physicists will freak out not knowing what the hell happened, and will most likely spend most of their time seeking answers and reasons how the hell did it happen.
Question 1: What would happen if the wheel is held further away from the body?
Question 2: If the angular momentum was very high, theoretically would the person be forced to spin and/or have a tendency to move towards an angle?
Question 3: If the weight of the wheel was higher, would the angular momentum be higher?
Thanks in advance folks!
In regards to number 3, yes, angular momentum is equal to I*ω. Greater mass means greater moment of inertia, assuming velocity remains constant, its angular momentum will be higher.
@@batzorigvaanchig6358 In regards to question 1, if the wheel is held further away, the moment of inertia of the system about the base plate"s axis changes (its the only possible axis of rotation), since moment of inertia is directly proportional to the square of the distance from an axis. Hence the guy holding the wheel would rotate with a lower angular frequency after flipping it.
The thumb rule is just used to find out the direction of angular momentum
We choose sign acc to our convienience
Sometime outwards is positive ,sometimes it can be negative
I doubt this was meant for test purposes , more to help us understand the concept before we can understand the maths behind it
Bravo! I learned something new. Your demonstration taught how am going to move forward with my design.
I hated school was aways getting in trouble but luckily in high school Mr Colicott was my physics teacher he was so enthusiastic and passionate about science especially physics, he always tried to make our lessons fun and interesting I'm grateful to him because he introduced a love of learning to me that has carried me through life. Videos like this remind me of those lessons so cool to watch them with my son and then talk about it. He's still young and was already withdrawing from school work but stuff like this even relatively simple demonstrations like these make his eye light up like he's seen a magic trick. Can't wait to hear what questions he comes up with for me after we watch it.
Excellent clear concise explanation and demonstration. Awesome stuff.
i understand but i dont understand why it moves in one direction. i understand what he's saying but dont get it. it's just a wheel spinning. i dont get how the starting position of the wheel would make any difference in rotating. because flipped or not, it's just a spinning wheel.
It all depends on how the system starts. Let's say that the system starts with a +L, so it starts at a counterclockwise rotation, and when we rotate it, it's now on a clockwise rotation, thus -L (you can see it at 1:35). By Newton's postulate of conservation of momentum, we know that the angular momentum of an isolated system tends to be conserved, you can imagine the isolated system as him, the wheel and the spinning base. When he changes the direction of the rotation, the system behaves in a way to conserve the initial state of the system which is spinning in the opposite direction two times faster to get to the initial state as he explained here: 1:47. Lastly, in summary, if we start the system as -L and then change it to +L, the system will try to conserve the momentum back to -L by spinning with -2L (+L - 2L = -L) and, analogously, if we start as +L and change to -L, the system will try to conserve the initial state by spinning with +2L(-L + 2L = +L).
Bunu Türkçye çeviren adam gibi adam kimse çok teşekkür ederimm ona
Benim kardeşim eyvallah yayınlanması çok uzun zaman alıyor 1 yıl önce çevirmiştim acaba yayınlanmış mı diye bakmaya geldim ve yorumunu gördüm yardımcı olduysa ne mutlu bana
@@DrAybars Çok teşekkür ederiz hocam harbiden çok faydalı adamsın
@@DrAybars aynen reis sağol
I am lost, why is he not spining when the system angular mometum is -L ? does it mean that if he throw away the spinning wheel then the turn table will actually spin anti-clock wise because 0 - L = -L , meaning there is a default angular mometum L if he standing on the turntable without the wheel?
no
When the wheel is spinning in it's own at -L, there is no need for him to spin as the only force that has been applied is to spin the wheel.
When he rotates the wheel and makes its angular momentum +L, there needs to be a correction equal to -2L in order to conserve the wheel's overall momentum, thus it spins him.
Norman xu, i agree, why doesnt he spin the oppisite way, when he flips the wheel over? Its really an unreasonable thing to watch. I guess ima make my own table to turn myself on....i mean, to rotate my self while holding a bike weel.
Anyways, i understand whats happening, but the lack of rotating the other way pulls me to want to make it myself. Good vid. Good question.
0:50 It's not angular momentum,
It's just the moment of inertia.
And the claim at the start of the video that it's Newton's third law that makes him spin is also wrong. When he flips the wheel over, the reaction force is a torque that would rotate him about a horizontal axis through his chest and turn him upside down, not a torque about the vertical axis through his spine that rotates him on the turntable.
This was Because of angular momentum.
Came here for this comment, thank you!
That’s mind blowing it is like magic even though I just studied this subject and took an exam on it
1:30 no external torques and not external forces, or net external torque=zero
When you dive, there is an external force but the angular momentum is conserved.
1:05. The moment of inertia depends on its shape and its mass. An object's moment of inertia depends on its geometry AND its density (whether or not the material of the object is uniform, etc.).
Whatever you're standing on has a direction it wants to move in more than the other. You should spin either direction based upon how you hold the wheel, but you only spin one way meaning the thing you're standing on has friction one way but not the other. That is kind of a big part of this demonstration that you leave out.
Kind of a silly way of saying it. "Friction one way but not the other"? He simply put one foot on the ground as he got on the thing he's standing on while holding the wheel. That way he wouldn't initially spin.
@@samusaran13372 well that's not correct, because he turns the wheel back and forth and he remains still with the wheel pointed one of the ways
@@rickdabagian9100 yes, because he started stationary and was handed the wheel.
@@samusaran13372 hell yeah Kanye!
Umm....how does the turntable rotate only in one direction and why does it not rotate when turning the wheel one way?
I think it's because he was standing still on the turn table with no angular velocity initially. (At the very beginning of the video he started to spin but the guy held him in place). So then the angular momentum is conserved with only the wheel acting in the closed system (the guy and the wheel).
it might be at start he did a rotation by him-self or receive rotation by another man before he stand up at the rotate-chair.
Has anyone done this but the bottom is rotating (hooked up to a motor I imagine with a "free turning table on top") causing the person to rotate e.g: in a clockwise direction, and then the wheel either makes you rotate twice as fast in one orientation as the forces add or stop in the opposite orientation as the forces cancel out? I feel this would help demonstrate this point even better. Sorry if I'm not very clear with this.
Thanks for explaining it so clearly, Will Smith!
Blasian Will Smith isn’t real 😂
0:48 so why that law only is valid in one direction? must be in both direction.
2y later. Do you have an answer for me?
This is my kind of physics class
This way you balance the y-component of the angular momentum. But if initially, you would hold the wheel vertically, so that it spins around a horizontal axis then the angular momentum is directed to the side. If you then turn the axis to be vertical, you start spinning in order to balance the vertical component of the angular momentum but what does balance the lost horizontal component of the angular momentum?
Dude.. I just wanna know what bearings he's using hahaha
hey that demo was done in my uni too... That's why I kinda miss the physics lecture from few semesters back...
I took an "L" trying to learn this. . .
same
Agree - if the force is vertical in either wheel position what’s generating the horizontal rotation force (other than the initial force required to torque the wheel from one position to the other)?
Why didn’t the platform rotate the same speed, opposite direction before it was flipped?
Thank you random internet video. I am now even smarter.
Hey I've got a question. Assuming the system was in equilibrium at -L means that the an outside force created the equilibrium while you were already on the turntable, (you were on the turntable and then the wheel was spun up). and that's why you were only ever able to spin in one direction.
Angular momentum is not just conserved here because of your thumb rule
It conserved because all the exteral forces acting on body like gravity is parallel to the axis of rotation
Hello jee aspirant
Pretty sure this would work without gravity, like a floating guy would turn in oppiste direction when the wheel is flipped.
@@generalginger7804
I agree with you
But the points that he was telling about direction were somewhat wrong
@@generalginger7804 would this happen in space then ?
@@camalex7782 Yep. According to my understanding.
More vids with this guy pls
Thank you Will Smith for informative video!
Why don't you spin counter clock wise when you turn the wheel over???
The set-up of this is fundamentally wrong. When he's standing on the turntable and rotates the wheel, it is correct that there is a Newton's-third-law force in the opposite direction. However, that is not the force that is making him spin: it's not the opposite direction. The opposite direction to him turning the wheel anticlockwise (as seen from our point of view) is a force that tries to turn him clockwise about a horizontal axis through his chest, not about a vertical axis down his spine. The reaction to him flipping the wheel over would turn him upside down, not rotate him on the turntable. The reason it doesn't turn him upside down is that the frictional force through his feet opposes this.
Thank you. My intuition was telling me that there was a torque reaction missing.
Why do you stop instead of spinning in the other direction if you flip it back around?
I read every comment just to see if I was the only person thinking that - why I don't understand why you wouldn't spend the other way
They had an example of this in a children's museum in Indianapolis 30 years ago - except it had a chair 🪑 that would spin on a pivot - faster the wheels spun the faster you would still but for the life of me I could never understand why I wouldn't go the other way
Unfortunately this video is again a hot-mess. At the final sum up you've reversed the directions that you had used in the explanations. In the demos you started with +L as the starting point then the flip to -L is what impels your body into the balancing rotation of +2L. YET, In the final summary, your body was spinning clockwise which meant -2L as a reaction to +L.
Haha Oh dear, when you fail at the correction video.
RUclips recommend legend after 4 years
People invented the wheel thousand of years ago, and we still have to explain nowadays how it works. 😅
Wait why do you stop when u spin it the other way? Why don't u go to the opposite direction?
God I want to study at MIT please help me!!
I hope you got there. I'm failing 3 classes at community college right now. One of which is conceptual physics!
I was totally wanting him to do cartwheels when he flipped the wheel vertical
Bruh what’s will smith doing here
Not necessary for the external forces to be zero. Although It must not produce torque. For instance gravity is acting here but it produces no torque as it is parallel to the axis of rotation.
Before we catch aliens we must first learn basic physics here that applies to everything and will smith is teaching us
Someone correct me if I’m wrong, I’m just a tradesman. But what he’s saying is that when the wheel spins away from the arm on the bottom; the force it exerts is wasted because it is unable to apply force to the arm on top. When the wheel spins towards the lowered arm though it is going with gravity which doesn’t hinder it? I really enjoy trying to break these principles down into facts laymen can understand.
if anyone needs a very good and In a hurry of the explanation of angular momentum and how it works. check this dude out.
Is this maybe also related with the fact that the front of the car is lifted up while accelerating? I guess the angular momentum is generated from the wheel to the left. Meanwhile, the entire system (vehicle body) tends to turn backwards and as a result 'counter' angular momentum occurs to the right and the total angular momentum is conserved. Is this correct?
Leider nein..
Ne spaß, hab keine Ahnung :D
what happens if you take the spinning wheel while pinning does it increase the speed that you spin.. and what if you are spinning opposite direction would it stop your momentum?.. hmmm
We’ve tried this on a Pilates spin plate but the friction must be too much as we don’t spin. So how to make one of these bases?
Torque. Same reason helicopters use a main rotor for lift, and a tail rotor for stable flight. The tail rotor is spinning counter to the main rotor. Without the tail rotor, the helicopter's entire fuselage would spin like a top, counter to the main rotor.
Airplane propellers are a little different but do the same thing, they are called "tractor propellers". Planes have wings, a rear stablizer and use an airfoil. Their wings produce the lift.
Copter's don't, they rely solely on the pitch of the main rotors for lift.
Plane props spin but the plane remains stable and does not spin.
The best explanation so far
I know its a dumb question but is it possible to create lift with this technique? Like those ufo mercury engines?
You can check out these two videos:
1) Maxwell's Wheel: ruclips.net/video/nVAqlZpkf2w/видео.html
2) Anti-Gravity Wheel: ruclips.net/video/GeyDf4ooPdo/видео.html
Hope they're learning more than that at MIT.
I loved your sentences...simple and practical. Great video
if its going counterclockwise nothing happens, but clockwise turn you clockwise, the question could be dumb but why dont u turn counterclockwise? why nothing happens one way, but the other way does? any help to understand? thank you!
Thank you sir ! I did not know it has a postive or negative factor in it
right right right right. But why do you turn only when you flip the wheel? and do not spin in the opposite direction before flipping the wheel? My brain is broken
Why doesn't it show him spinning in the other direction?
A video from another college shows that.
Floating in space, would he spin end over end?
Soooo… that mean if he start with the wheel spinning in opposite direction, when he flip it he will spin in positive direction right?
Or I am just stupid like I was in my high school’s physic class.
What happens if he keeps the orientation of the wheel but switches which hand is holding it? Or holds it in front of himself with both hands?
If you had started with the bike rim spinning in the opposite direction, would it spin you around the opposite direction when you flipped the wheel?
So if the wheel was spinning the opposite direction to begin with and he turned it over would he turn the opposite direction?
My head is spinning.
What happens if you flip the wheel twice in the same direction?? Just curious.
What happens if the wheel is out of balance?? Does it make the axle shake and change the spin?
What will happen if you rotate it twice to opposite direction?
This demonstration doesn't really have much to do with angular momentum. Its more of the fact that you are producing forces on the turntable with your feet, and by shifting your balance when you flip the wheel.
You could probably demonstrate this better with a spinning top on a spinning plate.
so the initial phase is -L, And on the spinning table he stand, every friction is neglected, and we change the wheel's rotation so the angular momentum is preserved?
This idea really helped me get through Statics and Dynamic!
One of my mentor used the wheel chair to explain us angular momentum conservation
If you don't get to smart ass..wtf. but I GOtta recognize your skill respect young homie
So If I add a mass to that system, but wheel is not moving, could I say angular momentum is not conserved?
What if I turn the wheel to the left to times ? I start spinning to the other side?
If you found this video on your homepage, congratulations! you just entered the exclusive side of youtube
So what if you turn it not spin it but flip it over the other direction do you spin the other way or would the wheel have to be spinning in the other direction? 😅
This shows the conservation of angular momentum, but what happens when something gets entangled ?
Very interesting demonstration of conservation of angular momentum!
Uncle Phill will be proud of you, Great Video
This is how "reaction flywheels" on space craft work.speeding up or slowing down any wheel on a given axis will alter the vehicles attitude.
what if you keep flipping it the same direction (which will require you to switch hands after each flip) will you keep spinning faster and faster? i’m sure the wheel slows down but you can just spin it more and keep flipping, is it a speed unlock?
This is what young minds need to be learning presently and in the future instead of racism, hate, and lies about different colored people. Please post millions of these educational videos! I'm a 45 yr old single mother. And I approve this message. Teach our children about life not hate and animosity
Nice and concise explanation! Very well done
What could we do to spin the other way...or is that a dumb question
What happens if your flip it two times? Will you speed up? Or the other way?
Hmmm. Works in one direction or orientation but not the other?
Shirley his is linked to the flipping wing nut?
I was more interested in this video than any lesson in school 💀😭
debeloid, if you know, box.. it depend, what then you move arms, start from legs.
point, of edged... mduil
The right hand thumb trick is used for physics (magnetic coil/electricity stuff) is it related in any way?
The right hand grip rule is a theory part of the Electromagnetic Induction and it's based on "Faraday's law of Electromagnetic Induction". So yes, when a current-carrying conductor is placed in an external magnetic field, the conductor experiences a force perpendicular to both the field and to the direction of the current flow. This is flemings left hand rule
@@firstlegend5105 i have forgotten everything in my 3 month break.. and im gonna take higher level physics next year
@@benztheprotogen3502 actually same, I am currently waiting for my A Level results to come through...
@@firstlegend5105 im grade 10 not 12 lol
That was dope! More please.
Why don’t you spin both ways when rotating the wheel?
Then how do you spend the opposite direction,
This information was put out years ago by a few different RUclips channels.
But yeah we know you gotta get that affirmative action brownie points MIT
You're such a sad person aren't you?
This video is almost 5 years old...
Some people don't even try to hide racism.
Does it work in vacuum/space?