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

Well power is work over time. Work is force times distance. Now you can use that to solve for force. \[P=\frac{ W }{ t }=\frac{ Fx }{ t } \rightarrow F=\frac{ Pt }{ x }=\frac{ 3.4\times10^{2}W \times 1s }{ 7.5\times10^{-2}m }=4,533.333333......N\]Well I haven't seen this topic in like a year but I think I am right. The answer is 4533.3 Newtons.