(a) Define the term 'work'. Write the fo...

(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)`)

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