Question

Question 15
The power of a motor pump is 2 kW. How much water per minute the pump can raise to a height of 10 m? (Given $g=10m{s}^{-2}$)

Answer 1

Given,
Power, P = 2 kW
height, h = 10 m
time , t = 60 s
$g=10m{s}^{-2}$

$P=\frac{w}{t}$
$P=\frac{mgh}{t}$
$P=2000W=\frac{m\times 10\times 10}{60}$
$m=\frac{2000\times 60}{10\times 10}=1200kg$