Question

a pump which lifts 1000kg of water to a water tank placed at a height of 20m in 1 minute. calculate the power

Answer 1

force = m g = 1000×10=10000 N

work done = force × displacement= 10000×20= 200000 j

power = work / time = 200000/60

power = 20000/6= 10000/3 = 3333.33watt