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Instantaneous Force and Impulse

A load of 5...

Question

A load of $50 k g$ is to be lifted to a height of $15 m$ in $15 s$ . The power retirement is

A

540 W

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B

450 W

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C

500 W

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D

Z e r o

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Solution

The correct option is C $500 W$
Work done $= m g h$
Power $= \frac{W o r k}{t i m e} = \frac{m g h}{t} = \frac{50 \times 10 \times 15}{15} = 500 W$

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