Question

The work done by a partice in circular motion is zero because

Answer 1

Answer:

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Explanation:

the force acting on the body, in it's motion, is always acting towards the center of the circle. ... Thus work done in circular motion is zero.

Answer 2

Explanation:

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In the circular movement example, the force is always at right angles to the motion, and so there is no work, because two perpendicular vectors always have a dot product equal to zero. ... Since the speed (i.e. the magnitude of the velocity) is constant, no work is being done and the energy remains constant.