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A skier weighing $60 kg$ stands at a building of $70 m$ heights. What will be the potential energy in N-m of the skier? ( take $g = 10 m / s^{2}$ )

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35000

24000

42000

54000

answer is C.

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Detailed Solution

The potential energy will be

42000 N - m .

Given:-

Mass (m) = 60 kg .

Height (h) = 70 m

g = 10 m / s^{2}

Potential energy = mgh

= (mass \times gravity acceleration \times height)

Potential energy = 60 \times 10 \times 70

= 42000 N - m .

So the potential energy is

42000 N - m .

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