Centripetal force does no work on a circularly-moving object because
A)no change in energy occurs.
B)rotational energy transfers to kinetic energy.
C)centripetal force has no component in the direction of motion.
D)none of the above.

Question

Quizplus · Accepted Answer

Centripetal force acts perpendicular to the direction of motion and hence does not perform any work on an object in circular motion. Option A is correct, but incomplete. Option B is incorrect because there is no transfer of energy between rotational and kinetic energy in circular motion since they are both types of kinetic energy.

Centripetal Force Does No Work on a Circularly-Moving Object Because