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posted by prem Thursday, December 1, 2011 at 11:17am.
Q. A water pump lift 9kg of water through a vertical height of 3.5 m in 10 minute .calculate the power of the pump?
power = work/time = force*distance/time = mg * distance / time = 9 * 9.8 * 3.5 / 600 = 0.51 watt
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