Question

A pump is used to lift 100kg of water from a well 60m deep, in 20 s. If force of gravity on 1 kg is 10N, find potential energy stored in the water and power spent by the pump.​

Answer 1

mass of the pump - 100 kg

height- 60 m

time- 20s

force= 10N

now mass - 1kg

f=mg;

10=1g

g=10 ms^-2

Potential energy = mgh

100*10* 60=60000 JOULES