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Acceleration Due to Gravity

A small block...

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A small block of mass m is suspended with the help of a spring from ceiling of an elevator which is accelerating downwards with acceleration a. The block is in equilibrium with respect to the elevator. The ratio of work done by the spring, as observed by a man in the elevator to that by a man on the ground, on the block in time t will be? (Also give free body diagram)

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