You've saved me so much from high school, especially this final year; so many of us appreciate what you do. Thank you so much! Keep up the great content.
@@joshuaprier2670yo I’m in AP physics 1 rn we are doing this stuff right like centripetal acceleration and universal law of gravitation. What was the hardest unit in physics just curious?
@mensurmehmedagic8751 Well, my physics 1 teacher kind of sucked (no one in my class got above a 2 on the test). I think the hardest thing for me was contact forces, torque, and gravitation. Right now, I'm in physics C and it's not as bad with a better teacher.
you dont realize how much all your videos have saved me in physics for my grade 12 year. My friends and I all joke in class about how we're going to have to watch your videos since we can't understand whats really going on, so thank you !
In NY the trend is 9 bio 10 chem 11 phys Or the easier track 9 bio 10 earth sci 11 chem And if your middle school had the option to take bio in 8 grade then you take those classes 1 year earlier
Bro in ethiopia you take all the 3 subjects(physics, biology and chemistry) from 7-10 then you have a choice between two paths 1) Natural science and 2) social science if you choose natural science you will have to learn all three of them in a more advanced and complicated way but if u choose social you will have to take economics, bussiness, marketing, history , geography and other related subjects@@wojciechkaczorowsski
I just like the way you are teaching this things,,for the last semester I have been performing poorly but soon I have improved due to your videos,,they are just wow!!!
I'm watching these videos when I'm kinda sleepy..cuz these are that interesting and understandable. Physics never makes you bored. And this channel.luv you and thank you. Really appreciate these videos.
Sarah Abderrahman ISS moves in almost 8km/s, so that’s even faster. And what do you mean with not real? Being able to calculate these simple things are essential to understand the fundamentals of how an object would act when put into orbit. It’s important as hell
The first part of this video helped me understand an extra credit question in my Geog605 class, remote sensing of the environment. We were asked how many times a certain satellite would orbit the earth in a day and we were only give the satellite altitude, earth's mass and radius, and the gravitational constant. The essential piece of missing info was the equation for the distance of a circular path. One question though, how did you translate your velocity value into m/s?
42,200,000 x 2pi / 86,400 = 3068 Seems a good deal easier for the last answer and we'll within reason given rounding. If we had more sigfigs for R it would be just as accurate.
Sir, how you can cancel both R, In centripetal Force R is the radius of circle(i think it should be the distance between Surface of Earth and Satellite) and in Gravitational Force R is the separation between two masses (from center of Earth to the Satellite). Could you Please Explain
while on a circular orbit if the velocity of the object is increased then it will go further away but a new balance can be achieved only if distance decrease. (Higher velocity means higher centrifugal force and it can be balanced only by a higher gravitational force which will happen only if distance decrease) in reality an elliptical orbit is created. how do you explain this by the above simple physics?
He used the equation: v=square root (GM/r). This will give you the speed of the satellite which is in circular orbit. If it was in an elliptical orbit, you'd have to use a different equation.
I think he made a mistake in the calculations, I wasn't able to find the same answer as him for the radius between the center of the earth to the satellite.
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When you have a/b = c/d, you multiply 'a/b' by d (to get rid of the 'd' on the bottom of the right hand side, and multiply the remaining c by b to get rid of the denominator on the left hand side, leaving 'ad = bc'. If it was a/b * c/d, then you're right, the R would cancel the R^2.
I keep getting 6.2543E10 for the speed on my calculator. I was wondering what am I doing wrong? I did convert the km into m by multiply it by 1000 and got the same radius in the video. I plugged the exact number in also.
As far as I'm aware the radius of the earth doesn't change, so 6.38x10^6 meters or 6371 kilometers should be a constant. edit : "The scientists estimated the average change in Earth's radius to be 0.004 inches (0.1 millimeters) per year, or about the thickness of a human hair, a rate considered statistically insignificant." *Source : NASA* (www.nasa.gov/topics/earth/features/earth20110816.html#:~:text=The%20scientists%20estimated%20the%20average,a%20rate%20considered%20statistically%20insignificant.) edit 2 : at this rate of 0.1 milimeters per year, it would take 10 milions year just for the radius to go up by 1 kilometer, so I would say 6.38x10^6 meters or 6371 kilometers is good enough
Forces only do work if they have some vector component along the path of motion. This path of motion is the circular orbit, the force is the centripetal force directed towards the center of the Earth. These are perpendicular, so gravity does no work. It's a similar story for charged particles moving in a mass spectrometer, if you've seen that.
if the earth is inside the system it cannot do work. hence 0. If it is outside the system like external forces. it does work. my prof has us set it up like so work= change in energy work= PE + KE ... on the left is external forces that create work (b0th pos. and neg. work has to be parallel though. Work that is perpendicular is 0. Torque is when there are perpendicular force and distance ) on the right is internal energies, Gravitational potential and kinetic. If 0 work that means the internal forces are equal and opposite (for this scenario) Hope this helps.
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Very true. I'm in AP physics C and my teacher although smart is very confusing. This man is the only reason I have an A
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You've saved me so much from high school, especially this final year; so many of us appreciate what you do. Thank you so much! Keep up the great content.
Lol same I have my ap test this week and we took 1 semester to do kinematics and dynamics
@@joshuaprier2670yo I’m in AP physics 1 rn we are doing this stuff right like centripetal acceleration and universal law of gravitation. What was the hardest unit in physics just curious?
@mensurmehmedagic8751 Well, my physics 1 teacher kind of sucked (no one in my class got above a 2 on the test). I think the hardest thing for me was contact forces, torque, and gravitation. Right now, I'm in physics C and it's not as bad with a better teacher.
This is so helpful, thanks for framing it up better than my physics teacher with a degree and teaching license
Thank you so much for your vids! You've been the most helpful online physics tutor I've had by far
you dont realize how much all your videos have saved me in physics for my grade 12 year. My friends and I all joke in class about how we're going to have to watch your videos since we can't understand whats really going on, so thank you !
meanwhile me in poland in 9th grade having these in physics
@@wojciechkaczorowsskimost kids In America we take physics in 9th grade as well. This person is probably from the UK because they say grade 12.
In NY the trend is
9 bio
10 chem
11 phys
Or the easier track
9 bio
10 earth sci
11 chem
And if your middle school had the option to take bio in 8 grade then you take those classes 1 year earlier
Bro in ethiopia you take all the 3 subjects(physics, biology and chemistry) from 7-10 then you have a choice between two paths 1) Natural science and 2) social science if you choose natural science you will have to learn all three of them in a more advanced and complicated way but if u choose social you will have to take economics, bussiness, marketing, history , geography and other related subjects@@wojciechkaczorowsski
I just love how this is for free and it's great I mean I'm passing my exams with good grades because of you and I really appreciate it
I just like the way you are teaching this things,,for the last semester I have been performing poorly but soon I have improved due to your videos,,they are just wow!!!
You saved my livelihood on my physics final, and for that, I will make a grand sacrifice in your honor this holiday season.
You are so much better than my physics teacher. Thank you for saving my grade
I'm watching these videos when I'm kinda sleepy..cuz these are that interesting and understandable. Physics never makes you bored. And this channel.luv you and thank you. Really appreciate these videos.
2 minutes in the video, I already know how to solve my problem. Thank you so much
Thank you so much bro I had a test with no where to study from. This is life saving may God bless you
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made 7 years ago and still helps me out today👌
Yeah, orbits haven't changed much in seven years, so it probably still works!
@ that’s not what I ment 😂
Wow that's a really fast satellite.
This is about the speed of an actual satellite
@Jebediah Jr,how?l mean what is the importance of calculating the speed of a satellite if it isn't real?
@@hannalot_ how?
Sarah Abderrahman ISS moves in almost 8km/s, so that’s even faster. And what do you mean with not real? Being able to calculate these simple things are essential to understand the fundamentals of how an object would act when put into orbit. It’s important as hell
@@dominobuilder100 oh I just thought that a satellite with that high speed hasn't been made yet I mean it is still on paper
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The first part of this video helped me understand an extra credit question in my Geog605 class, remote sensing of the environment. We were asked how many times a certain satellite would orbit the earth in a day and we were only give the satellite altitude, earth's mass and radius, and the gravitational constant. The essential piece of missing info was the equation for the distance of a circular path.
One question though, how did you translate your velocity value into m/s?
Thank you very much for this video
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5:07 is the speed of the satellite angular velocity?
when do we use m/s and km/s when solving for velocity?
tq sir
is this related in calculating quantities related to planetary or satellite motion?
42,200,000 x 2pi / 86,400 = 3068
Seems a good deal easier for the last answer and we'll within reason given rounding. If we had more sigfigs for R it would be just as accurate.
Wich drawing program are u using?
Thank u so much you are amazing ❤❤❤
amazing video, thank you!
Sir, how you can cancel both R, In centripetal Force R is the radius of circle(i think it should be the distance between Surface of Earth and Satellite) and in Gravitational Force R is the separation between two masses (from center of Earth to the Satellite). Could you Please Explain
What will happen if new mass added to the satellite while moving? affect of the linear momentum? and how it maintain the speed constant?
if you add new mass the same way rockets dock to ISS, then it won't affect anything because the new mass already achieve equal speed to the satellite
@@jo-oy4vj ok, thanks
thanks for the lecture it was inspiring. God bless you in jesus name
while on a circular orbit if the velocity of the object is increased then it will go further away but a new balance can be achieved only if distance decrease. (Higher velocity means higher centrifugal force and it can be balanced only by a higher gravitational force which will happen only if distance decrease) in reality an elliptical orbit is created. how do you explain this by the above simple physics?
What calculator are you using bro???
Thankkks
Bro! You rock!
Sir,for explaining which app u have used?
Where did you get the 6254.3 m/s from. What did you do to get it.
He used the equation: v=square root (GM/r). This will give you the speed of the satellite which is in circular orbit. If it was in an elliptical orbit, you'd have to use a different equation.
It is probably too late now, but what he did was double parenthesis like this: ((6.67 X 10 ^ -11)(5.97 X 10^24) divided by 1.018 X 10^7))
thank you....
I'm not getting the calculation for r even though I put in all the values u have in for the cube root thingy
Why are you so girly?
It's thing and not thingy 😂
@@nsifrahman9031 lol how is thingy girly?
I think he made a mistake in the calculations, I wasn't able to find the same answer as him for the radius between the center of the earth to the satellite.
could you maybe explain what the variables mean
he did.
Isn't v the tangential velocity? So shouldn't T = 2pir/v/r since v/r = w which is the rotational velocity?
can u plz explain the variation of centripetal accl. and velocity of planets at different distances from sun?
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You may not even need a telescope this weekend to see this comet | PBS ...
Dec 13, 2018 · As a comet gets closer to the sun, heat causes the comet's volatile ... Hazardous space junk is piling up.
Missing: cleaners/ | Must include: cleaners/
Universe Today › what-are-comet-ta...
What Are Comet Tails? - Universe Today
Jul 31, 2014 · Because of their tails and transitory nature, comets were long thought to be products of the Earth's atmosphere. It wasn 't ...
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the comet's tale - Institute of Astronomy
Newsletter of the Comet Section of the
Im an average student and nim thankful for this but kinda lost in number 2(b) 😭
Can you do ESCAPE VELOCITY OF A SATELLITE
Believe it or not, I'm having to perform many calculations for a singular mission that I'm planning in Kerbal Space Program
At 12:13 shouldn't the value of R^2 be cancelled by R and the remaining value should be R?
When you have a/b = c/d, you multiply 'a/b' by d (to get rid of the 'd' on the bottom of the right hand side, and multiply the remaining c by b to get rid of the denominator on the left hand side, leaving 'ad = bc'.
If it was a/b * c/d, then you're right, the R would cancel the R^2.
Are u dumb?
Isn't it v=√(2GM/R) ? First example speed of satellite
pretty sure thats the escape velocity my guy
Super like
please clarify me it's angular speed is equal to that of earth about its own axis
you have been clarified
so satelies move at 11059.2km/h? constantly around earth?
Got jee tomorrow wish me luck boys
I keep getting 6.2543E10 for the speed on my calculator. I was wondering what am I doing wrong? I did convert the km into m by multiply it by 1000 and got the same radius in the video. I plugged the exact number in also.
i got the same problem
This dude 100% got rid of his speech impediment! How tf do you do that?
Is the 6.38x10^6 constant?
As far as I'm aware the radius of the earth doesn't change, so 6.38x10^6 meters or 6371 kilometers should be a constant.
edit : "The scientists estimated the average change in Earth's radius to be 0.004 inches (0.1 millimeters) per year, or about the thickness of a human hair, a rate considered statistically insignificant." *Source : NASA* (www.nasa.gov/topics/earth/features/earth20110816.html#:~:text=The%20scientists%20estimated%20the%20average,a%20rate%20considered%20statistically%20insignificant.)
edit 2 : at this rate of 0.1 milimeters per year, it would take 10 milions year just for the radius to go up by 1 kilometer, so I would say 6.38x10^6 meters or 6371 kilometers is good enough
What is the work of the Earth on the satellite and why is it equal to zero?
XxPlayMakerxX131 i dont fucking know but these are so fucking hard fr
Forces only do work if they have some vector component along the path of motion. This path of motion is the circular orbit, the force is the centripetal force directed towards the center of the Earth. These are perpendicular, so gravity does no work. It's a similar story for charged particles moving in a mass spectrometer, if you've seen that.
if the earth is inside the system it cannot do work. hence 0. If it is outside the system like external forces. it does work.
my prof has us set it up like so
work= change in energy
work= PE + KE ...
on the left is external forces that create work (b0th pos. and neg. work has to be parallel though. Work that is perpendicular is 0. Torque is when there are perpendicular force and distance )
on the right is internal energies, Gravitational potential and kinetic. If 0 work that means the internal forces are equal and opposite (for this scenario)
Hope this helps.
Gold