Massachusetts Institute of Technology
Sign in

MIT Physics Demo -- Centrifugal versus Centripetal Motion

A wooden ball is attached to the rim of a spinning wheel. The ball is held in place by a string. When the spring is cut, the ball flies in a straight tangent to the wheel.

In the camera's frame of reference, the ball constantly accelerates around in a circle due to the centripetal force pulling it inwards. When the string is cut, the acceleration stops, and the ball flies away in a straight tangential line. When the string is cut in the rotating frame of reference, a ficticious force (centrifugal force) accelerates the ball.

Comments (2)

Thanks! We used this in homeschool physics. It was a great visual. It would have been a shade better if the person's arm was not in the way on the second view…

Posted over 8 years by Anonymous User

blah blah blah

Posted over 8 years by Anonymous

You need to log in, in order to post comments.

MIT Department of Physics Technical Services Group

MIT Department of Physics Technical Services Group

Category: Science | Updated over 6 years ago

Created
August 28, 2008 14:21
Category
Tags
License
Creative Commons Attribution-NonCommercial (What is this?)
Additional Files


Viewed
38042 times

More from MIT Department of Physics Technical Services Group

Faraday's Cage

Faraday's Cage

Added 8 years ago | 00:01:23 | 69409 views

MIT Physics Demo -- Microwave Interference

MIT Physics Demo -- Microwave Inter...

Added almost 9 years ago | 00:02:11 | 30690 views

MIT Physics Demo -- No-Win Tug of War

MIT Physics Demo -- No-Win Tug of War

Added over 8 years ago | 00:00:33 | 43496 views

Laser Diffraction and Interference

Laser Diffraction and Interference

Added almost 8 years ago | 00:02:25 | 41812 views

Potential Energy to Kinetic Energy

Potential Energy to Kinetic Energy

Added over 8 years ago | 00:01:11 | 34594 views

Moving Sand Cart Over a Rotating Surface

Moving Sand Cart Over a Rotating Su...

Added over 7 years ago | 00:01:13 | 37909 views