A body of mass m is taken to the bottom of a deep mine. Then

A pendulum clock is taken to the bottom of a deep mine. Will it gain or lose time? How should its length be altered to correct the time?

A wooden blocks is taken to the bottom of a deep column lake of watre and then released it rises up with a

A body of mass 12 kg is at the bottom of a lake of depth 5 m. If the work done in raising the body to the water surface is 350 J, the specifice gravity of the body is