First slide

Power

Question

The power of water pump is 2 kW . If g =10 m /s², then amount of water it can raise in 1 minute to a height of 10 m is

Moderate

A

2000 lit
B

1000lit
C

200 lit
D

1200 lit

Solution

$P = \frac{E}{t} = \frac{mgh}{t} or ∴ m = \frac{(2 \times 10^{3}) \times 60}{10 \times 10} k g$

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