Question

37. A body of mass 100 kg is lifted up by 10 m. Find :
(1) the amount of work done.
(ii) potential energy of the body at that height (value of g = 10 m/s).
much potential energy does he gain? (8 = 9.8 m/s).
a hody: (a) positive, (b) negative, and (c) zero
can​

Answer 1

Explanation:

Mass , m = 100 kg

displacement, h = 10 m

Work = Force × Displacement = 100 × 10 = 1000 Joules

Let Potential energy = x

$x = \sqrt{mgh}$

$x = \sqrt{100 \times 9.8 \times 10} = 98.99 \: joules$

Therefore, it is your answer.

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