Find the power required to raise 4m3 of water per minute a vertical distance of 3m, discharging at a speed of 5ms-1. Take g to be 10ms-2
(1m3 has a mass of 1000kg)
+36916 F= mg = 4(1000)(10) = 40000 kg-m/s^2 = 40000 N
W= F x d = 40,000(3) = 120,000 kg-m^2/s^2= 120,000 j
P= W/t = 120000/60 = 2000 j/s
