A container with a mass of 5 kg is lifted to a height of 8 m. Work done by the gravitational force is equal to
A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is g=9.8 m/sec2
A man lifts a mass of 20 kg to a height of 2.5m Assuming that the force of gravity on 1 kg mass is 10N, find the work done by the man.