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 = 10 m sโ2)
ScienceClass 9CBSEAnswered 27 Mar 2026
Answer
Soln:
Power of pump = 2kW =2000W Time (t)= 60sec
Height (h) = 10m g = 10m/s2 Power =work done per unit time.
Work done = mgh = m ร10ร10 =100m
2000W = 10๐
60๐
Therefore, m = 1200kg So, the pump can raise 1200kg of water in one minute.
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