Q

A 50 kg boy climbs 44 stairs in 10 seconds. Each stair is 15 cm high. Find his power.

RRB Group D 24/09/2018 / Shift-I 2018
✓ Answer: D 330 W
h = 44 × 0.15 = 6.6 m. Using g = 10 m/s², P = 50 × 10 × 6.6/10 = 330 W.
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