Question

A pump is required to lift 1000kg of water per minute from a well 12 m Deep and Eject it with a speed of 20 m/s. what must be the power output of the pump??

Answer 1

mass of the object=1000kg time taken=1 min(60sec) height attained =12 m velocity attained= 20 m/s ∴ kinetic energy in the body E= 1/mv^2 E=1/2*1000*20^2 E=500*400 E=200000J ∴power=energy/time P=200000/60 P=3333.3 W ∵ 1 W= 746 H.P ∴3333.3W=746**3333.3 =2486641.8 ans i hope that this will help u