First slide

Power

Question

A weight lifter lifts 300 kg from the ground to a height of 2 meter in 3 second. The average power generated by him is

Moderate

A

5880 watt
B

4410 watt
C

2205 watt
D

1960 watt

Solution

$P = \frac{Workdone}{Time} = \frac{mgh}{t} = \frac{300 \times 9 .8 \times 2}{3} = 1960 W$

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