Q

A 50 kg boy climbs 45 stairs in 10 seconds. Each stair is 16 cm high. Find his power.

RRB Group D 23/10/2018 / Shift-II 2018
✓ Answer: C 360 W
h = 45 × 0.16 = 7.2 m. Using g = 10 m/s², P = 50 × 10 × 7.2/10 = 360 W.
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