Q

A 50 kg boy climbs 43 stairs in 10 seconds. Each stair is 15 cm high. Find his power.

RRB Group D 24/10/2018 / Shift-III 2018
✓ Answer: C 322.5 W
h = 43 × 0.15 = 6.45 m. Using g = 10 m/s², P = 50 × 10 × 6.45/10 = 322.5 W.
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