Name: Circular Motion and Centripetal Force
Uploaded: 2019-07-19
Duration: 6 min 24 s
Description: Here is an interesting video on the uniform circular motion which explains the circular motion of the Ferris wheel, merry go round and roller coaster. Get in!

Question

An object follows a circular path at a steady speed. Describe how each of the following quantities changes as it follows this path: speed, velocity, kinetic energy, momentum, centripetal force, centripetal acceleration. (Refer to both magnitude and direction, as appropriate.)

Accepted Answer

Speed and kinetic energy are scalar quantities, the others are vectors. Speed is constant; velocity has a constant magnitude but continuously changing direction (the direction is tangential to the circle); kinetic energy is constant; momentum has a constant magnitude but continuously changing direction (the direction is tangential to the circle); the centripetal force has a constant magnitude but continuously changing direction (the direction is always towards the centre of the circle); the centripetal acceleration behaves in the same way as the centripetal force.

David Sang and Graham Jones Solutions for Chapter: Circular Motion, Exercise 8: Questions

David Sang Physics Solutions for Exercise - David Sang and Graham Jones Solutions for Chapter: Circular Motion, Exercise 8: Questions

Questions from David Sang and Graham Jones Solutions for Chapter: Circular Motion, Exercise 8: Questions with Hints & Solutions

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