Angular Momentum Physics Practice Problems
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- čas přidán 27. 08. 2024
- This physics video tutorial provides a few examples and practice problems on angular momentum. It explains how to calculate the angular momentum and rotational inertia of a spinning disk in the first problem. In the second problem, it explains how to calculate the average torque acting on a rod using angular momentum. The third problem discusses how to calculate the torque acting on a rod as well as the final angular momentum and final angular speed of the rod after a certain time period has elapsed. In addition, it explains how to calculate the work done by the force on the rod using rotational torque as well as rotational kinetic energy. The last problem discusses how to calculate the final angular speed of a merry-go-round after a child jumps on it using conservation of angular momentum.
Intro to Rotational Motion:
• Rotational Motion Phys...
Angular Velocity:
• Angular Velocity Physi...
Angular Acceleration:
• Angular Acceleration P...
Rotational Kinematics:
• Rotational Kinematics ...
Intro to Torque:
• Torque, Basic Introduc...
Intro to Inertia:
• Inertia - Basic Introd...
________________________________
Parallel Axis Theorem:
• Parallel Axis Theorem ...
Rotational Dynamics:
• Rotational Dynamics - ...
Rotational Kinetic Energy:
• Rotational Kinetic Ene...
Rotational Power, Work, & Energy:
• Rotational Power, Work...
Work Done By a Constant Torque:
• Work Done By a Constan...
Angular Momentum & Torque:
• Angular Momentum - Bas...
_________________________________
What Is Angular Momentum?
• What Is Angular Momentum?
Angular Impulse:
• Angular Impulse
Rotational Motion - Review:
• Torque, Moment of Iner...
Full-Length Videos and Worksheets:
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Physics PDF Worksheets:
www.video-tuto...
Physics PDF Worksheets: www.video-tutor.net/physics-basic-introduction.html
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Nice!
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Extremely well done! Excellent examples which will significantly help me solve the angular momentum FlipItPhysics problems. Thank you!
Good luck to every one their physics test
Beautifully clear as always
its clear and well explained love it
Thank you so much i wish if i found this channel earlier .. but what to do at least hope i will pass my final today
Could you start to post a file with the questions so we can work along with you easier? I follow a lot of your videos and that would make things so much easier. Thanks again!
why don't you pause the video and work it out and see the solution
@@calvin9388
A file with lots of question would be nice.
Why is my physics homework harder than this?😫
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Thank you very much for having this practice problems. Many physics teachers just teach concept but dont do questions. During exam many students will PANIC! Thanks to your video i wont !
great job. check 07:10 Wf=288rad/s shld be 28.8rad/s. thus the work is 8640J. thanks brah
how will we find volume, pressure and energy prameters from torque force?
If you came out one day and said you were a god, I would believe it no questions asked.
Oh, man... These are very basic questions bring some bouncer or HArder questions from past year
Where did the 1/3 come from when you were calculating the inertia?
It comes from an integral. Just know that it applies to a rod
When calculatng the inertial 0f the level its 1/3mr^2
Well the center of Inertia for a rod 1/12mL^2 . Using the parallel axis theorem...you will end up getting 1/3mL^2. My professor only gives us the center of mass for Inertia so we are expected to derive a new formula for the moment of Inertia using the parallel axis theorem when there is a new axis of rotation.
Dude, all your videos are lit AF, but PLEASE turn your volume up! It's really quiet compared all the rest of the videos on youtube. Usually, Id just crank the volume up, but sometimes I study on my laptop without an external speaker, and they only get so loud.
Also, thanks again for your wonderful videos
Please do a video on how to do the calculus for these.
thanks from Egypt 👨👨👨👨
Man im confused on the units; ive seen different units used for ang, momentum on 3 occasions now: kg.m2, kg.m2/s and kg.m2.rad/s...... which one is correct???
v=wR , as you know. if we use dimensional analysis , we would find that L=I.w or 1/2mR^2.v/R and one of the R's going to be canceled. Therefore , we will get the equation L=1/2mvR, whose unit is kg.m^2/s
for a uniform disk , of course. Moment of inertia might change if you choose a different object such as ring or a rod
Thank you......this really helped!
What is the SI unit for angular momentum?
6:17 its okay i forgive u :). I was hella confused at first
I think we have to use parallel axis Theron to calculate the moment of inertia of child??.. Please clear my doubt
Really, Absolutely, Completely, so fxxking good explanation!!!
I realy love your channel
😘😘😍😍
4:03 Where did the moment of inertia go in that calculation?
hi dude for problem number(2) you found net torque, not average torque which was 6.25 . if I am wrong help me out
could you please help me with this problem? Two small 0.85-kg masses are attached to opposite ends of a very lightweight rigid rod 0.7 m long. The system is spinning in a horizontal plane around a vertical axis perpendicular to the rod located halfway between the masses. Each mass is moving in a circle of radius 0.35 m at a speed of 0.80 m/s. What is the total angular momentum of this system?
Is inertia half of mass times radius squared or just mass times radius squared?
depends on what inertia youre calculating. The moment of inertia is different for a sphere than it is for a disc, etc.
The moment of inertia of a rod is (1/12 mr^2) not (1/3mr^2) @ 6:15
Rod of length L and mass m, rotating about one end. has I=1/3mr^2
Rod of length L and mass m, rotating about its center. for I=1/12mr^2
That’s true! I thought it was rotating about its center
thanks brah
Thank You 🙏
Allah senden razı olsun birader
How much time required to stopping the marry go round to stopping ???show actual data over it ???
It's funny how the other week i was writing an assignment based on the question in 9:28.
Great vid but why aren't there dimensions in the first question part b?
Like, 675 kgm²/s
Why is inertia one-third for the first question but one-half for merry go round
Thank you sir
Angular momentum and pressure or vacuum
Damn. I thought the L was length. I'm so glad I found this video if not I would be zero
you're the best
06:30 I don't understand why 1/3!!!
Thin uniform rod (axis passing perpendicularly through end): I = ⅓ML²
Thin uniform rod (axis passing perpendicularly through centre): I = 1/12ML²
Thank you! @@chanella3996
Agree
If a child jumps on a merry go round, why doesn't it produce torque?
Karen P because it’s not perpendicular to the angular momentum. If a record is playing on a turn table and I put my finger on it, it’s not going to create torque is it?
Is angular momentum of earth make it more light or heavier 🕉🕉🕉
i totally agree...something like ''The jack of trades '' can do☺
Why didn't the child make a torque? Can the torque be m*g*4?
Work done on pressure cooker ???maximum possible ???🕉🕉🕉🕉
Will pressure cooker band by atmospheric pressure ???if it's volume is five 5 liter ????made of steel ???