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Question

If a man of $$30$$ kilograms climbs stairs in $$4$$ seconds when height of stairs is $$5$$ meters, power output produced will be:


A
367.5W
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B
36W
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C
370W
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D
397.5W
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Solution

The correct option is A $$367.5 W$$
Work done$$=mgh=30*4*9.8=1470J$$
$$power=\dfrac{work}{t}=\dfrac{1470}{4}=367.5W$$

Physics

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