Question
Find the horse power used in pumping 250kg of water per minute from a well 30m deep. If the efficiency of pump is 60%, then also find the horse power of pump.
Solution
Given,
Mass of water pumped per minute, m= 250 kg,
Depth of the well, d = 30m
Time taken to pump the water, t = 60 s
The horse-power used for pumping out the water is,
Efficiency of pump = 60%
Therefore, horse power of pump is,