ScienceCLASS 9CBSE
answered 27 Mar 2026The 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 s–2)
A.VERIFIED ANSWERfact-checked by tutors
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 ×10×10 =100m
2000W = 10𝑚
60𝑠
Therefore, m = 1200kg So, the pump can raise 1200kg of water in one minute.