Question

what amount of work is done by a centripetal force in a circular motion​

Answer 1

Explanation:

Since, the particle always moves in a direction perpendicular to the radial direction in circular motion. Therefore, the dot product is always zero and hence, the work done by centripetal force in a circular motion is always zero.

Answer 2

Answer:

Thus, the work done by the centripetal force in the case of uniform circular motion is 0 Joules. Recall also from Unit 5 of The Physics Classroom that when no work is done upon an object by external forces, the total mechanical energy (potential energy plus kinetic energy) of the object remains constant.

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