Question

The power of a pump motor is 2 kilowatt. How much water per minute can it raise to a height of 10 meter? given ; g= 10 m$s^{-2}$

Answer 1

given, the power of pump=2KW=2000W

Time(t)=60 sec

Height(h)=10m

g=10$m/s^2$

as you know, Power =work done unit time

work done= mgh=$m\times 10\times 10$=100m

therefore, 2000w=$\frac{100m}{60s}$

hence, m=1200 kg