The work done on a body moving in a circular path is zero. Justify.

The work done on a body moving in a circular path is also zero. This is because, when a body moves in a circular path, then the centripetal force acts along the radius of the circle, and it is at right angles to the motion of the body. Thus, the work done in the case of moon moving round the earth is also zero. From this discussion it is clear that it is possible that a force is acting on a body but still the work done is zero.