Question

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Q : An electric pump has 2 kW power How much water will pump lift every minute to a height of 10m ?

$take \: g \: = 9.8m \: per \: {s}^{2}$
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Answer 1

Given, power of pump = 2kW =2000W

Time (t)= 60sec

Height (h) = 10m

g = 10m/s2. (I have taken 10 for easy calculation as it wasn't given in the question)

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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