A fixed pulley is driven by a 100 kg mass falling at a rate of 8*0m in 4*0s. It lifts a load of 75*0 kgf. Calculate (a) The power input to the pulley taking the force of gravity on 1 kg as 10 N. (b) the efficiency of the pulley, and (c) The height to which the load is raised in 4*0s.

A fixed pulley is driven by a 100 kg mass falling at a rate of 8*0m in

1.	A fixed pulley is driven by a 100 kg mass falling at a rate of 80m in 40s. It lifts a load of 750 kgf. Calculate (a) The power input to the pulley taking the force of gravity on 1 kg as 10 N. (b) the efficiency of the pulley, and (c) The height to which the load is raised in 40s.
Answer» ANSWER :(a) 2000W, (B) `075`, (c) c `80M`.