Question

A man of 60kg walksup to the the top of a building whose height is 15m above the ground .how many joules of work has he done???
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Answer 1

Explanation:

here, m = 60 kg

h = 15 m

g = 9.8 m/s*s

so, work done, W = mgh

W = (60 × 15 × 9.8)J

W = 8820 J

W = 8.82 KJ

hence, work done = 8.82 KJ