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Power

A 60 kg Jat...

Question

A $60 k g$ Jatan with $10 k g$ load on his head climbs $25$ steps of $0.20 m$ height each. what is the work done in climbing ? ( $g = 10 m / s^{2}$ )

35 J

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350 J

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500 J

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3500 J

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Solution

The correct option is D $3500 J$
Total mass $= 50 + 20 = 70 k g$
Total height = $20 \times 0.25 = 5 m$
Work done = $m g h = 70 \times 10 \times 5$
$= 3500 J$

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