Question

A man weighs 60 kg climbs up a staircase with 20 kg load on his head. the staircase has 20 steps and each step has height 20 CM .the increase in potential energy of man is

Answer 1

Height of each step = 20cm= 0.2m
Total mass = 60+20 =80kg

Now potential energy = mgh
= 80×10×0.2
= 160 J

Hope this helps.

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