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Question

Is it possible that an object is in the state of accelerated motion due to external force acting on it, but no work is being done by the force. Explain it with an example.

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Solution

Yes, when force acts in a direction perpendicular to the direction of displacement.e.g. earth revolves around the sun under gravitational force of sun on earth, but no work is done by the sun, though earth has centripetal acceleration.

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