Question

The moon revolves around the Earth in a circular path under the action of gravitational force. What can you conclude about the net work done by gravity in this case?

Answer 1

Work done by moon is 0.

This is because when it revolves around the earth, it comes back into its initial position. The displacement is 0 hence the work is 0.

Explanation:

Work is done by a force on an object when that force causes the object to movein the direction of the force. Since the moon movesperpendicularto the gravitational force from the Earth, no work is done.