Q

A 50 kg boy climbs 40 stairs in 9 seconds. Each stair is 15 cm high. Find his power. (g = 10 m/s²)

RRB Group D 23/10/2018 / Shift-III 2018
✓ Answer: A 333.33 W
h = 40 × 0.15 = 6 m. P = 50 × 10 × 6/9 ≈ 333.33 W.
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