When a body like earth is moving in a circular path the work done in that case is zero because:

1. Centripetal force acts in the direction of motion of the body
2. Centripetal force acts along the radius of circular path
3. Gravitational force acts along the radius of circular path
4. Centrifugal force acts perpendicular to the radius of circular path

 When a body like the earth is moving in a circular path the work done in that case is zero because centrifugal force acts perpendicular to the radius of the circular path. 

Therefore, option (d) is correct.

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Updated on: 10-Oct-2022

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