Question 151:
moderateHow much water a pump of $2 \text{ kW}$ can raise in one minute to a height of $10 \text{ m}$? (Take $g = 10 \text{ m/s}^2$)
(1990)
Using $P = \frac{mgh}{t}$, mass $m = \frac{P \cdot t}{gh} = \frac{2000 \times 60}{10 \times 10} = 1200 \text{ kg}$, which equals $1200 \text{ litres}$.