Question

calculate the power of an electric motor that can lift 800kg of water to store in a tank at a height of 15000cm in 20s. (g=10m/s^2)

Answer 1

Power = Energy / Time
= mgh / t
m = 800kg ; g = 10m/s^2 ; h = 15000cm = 150m ; t = 20s ; P =?

P = 800*10*150/20 = 1200000/20 = 60000 W
= 60 kW
Power of electric motor = 60 kW

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