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Average and Instaneous Power

A pump of 200...

Question

A pump of 200 W power is lifting 2 kg water per second from an average depth of 10m.

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Solution

Given : $P = 200 W$ $m = 2 k g$ $h = 10 m$
Using $P = \frac{m g h}{t}$
or $200 = \frac{2 \times 10 \times 10}{t}$
$⟹ t = 1 s$

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