NEET UG PHYSICS MCQ: WORK-ENERGY-POWER

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A person of mass 50 kg carrying a load of 20 kg walks up a stair case. If the width and height of each step are 0.25 m and 0.2 m respectively, the work done by the man in walking up 20 steps is

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Correct option: D

2800 J

The correct answer is D. The work done is calculated by finding the total height climbed and then using the formula

W = mgh

, where m is the total mass and h is the total height.

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