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Fundamental and Derived Units

How much wate...

Question

How much water per minute will a pump of power 2kW can raise to a height of 10m.(g=10m/s)

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Solution

Given, power of pump = 2kW =2000W

Time (t)= 60sec

Height (h) = 10m

g = 10m/s2

As you know, power =work done per unit time.

Work done = mgh = m ×10×10 =100m

Therefore, 2000W = 100m/60s

Therefore, m = 1200kg

So, the pump can raise 1200kg of water in one minute.

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