A winch is used to lift a bucket on a building site. The winch lifts its load it a speed of 0.5m/s. The load weighs 75Kg and the height through which it is raised is 25m. The vinch is driven by an 110V, 13A motor. a) How long does it take for the load to be lifted? b) How much electrical energy is used to raise the load? c) What is the potential energy of the load after it has been raised? d) What is the efficiency of the winch? e) What forms could the lost energy take? f) How could the efficiency of the winch be improved? g) How long would it take to raise the load if the winch efficiency is 100%?