Question

A water pump with a power of 3.4 × 102 watts lifts water at the rate of 7.5 × 10-2 meters/second from a water tank. What is the force exerted by the pump on the water?

Answer 1

P = W / t work / time = power

P = F * S / t

F = P t / S force required

F = P / (S / t) since given .075 meters / sec

F = 340 J/sec / .075 m/sec = 4530 J / m = 4530 Newtons