The moon revolving round the earth in circular orbit is held by the gravitational force of the earth exerted on the moon. Does this gravitational force do any work on the moon?

Yes, always

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Never does any work

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No, excepts on moonless night

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Yes, only on full moon day

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Solution

The correct option is B Never does any work
Centripetal force always acts perpendicular to the direction of motion. Hence no work is done.

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The moon revolving round the earth in circular orbit is held by the gravitational force of the earth exerted on the moon. Does this gravitational force do any work on the moon?

The correct option is B Never does any workCentripetal force always acts perpendicular to the direction of motion. Hence no work is done.

The correct option is B Never does any work
Centripetal force always acts perpendicular to the direction of motion. Hence no work is done.