A motor and gearbox system is used to raise a load from the ground to the roof of a building site. The load weighs 100kg and the motor runs from a 110 volt supply and draws a current of 15 amps. If the roof is 25m above the ground, calculate:
(a) The potential energy of the load when it has been raised
(b) Theamountofelectricalenergyusedinthattime
(c) The time taken to raise the load
(d) Theaveragespeedatwhichtheloadisbeingraised
(e) Thekineticenergyoftheloadwhenitisbeingraised.
