Question

(a) Define the term 'work'. Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula.
(b) A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2)

Answer 1

Answer:

force=9.8m/s2

mass=50kg

s=72 metre

Explanation:

work done=f×s

=mg×s

=50×9.8×72

=35280 joule

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Answer 2

Explanation:

force = 9.8m/s^2 mass =50 kg s = 72 m work done = f×s = mg × s 50×9.8 × 72 = 35280 joule