The work done by a centripetal force f when the body completes one rotation around the circle of radius r is
Answers
If we are talking about a solid body:
After 1/2 revolution: 0 joules
After 1 revolution: 0 joules
After 1 1/2 revolution: 0 joules
Are you starting to notice a pattern here?
Whoever posed that question is pulling the old stunt of giving unnecessary information. In a solid body, there is no deformation in response to the centripetal force; it is only maintaining the shape of the body. Therefore, the force does no work.
If the body flies apart under excess centrifugal force, then centripetal force may slightly reduce the radial velocity with which the pieces fly off. Then, it does a bit of negative work.
A material body will slightly expand as angular velocity increases, per Young’s modulus, and if there is no permanent damage or deformation the body will return to its former dimensions when rotation ceases. Then, centripetal force does a bit of negative work resisting the expansion during increase, and equal and opposite positive work during subsequent braking. This is during starting and stopping, and is unrelated to the number of turns.
If this helps then plzzzzz mark me brainliest.