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A man carrying a bag of total mass 25kg climbs up to a height of 10m in 50 seconds. Calculate the power delivered by him on the bag. ( Ans : 49J) |
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Answer» Given conditions ⇒ Height = 10 m. Time = 50 seconds. Kinetic Energy = mgh = 25 × 9.8 × 10 = 2450 J Now, ∵ POWER = Energy/Time ∴ P = 2450/50 ∴ P = 49 W. Hence, the Power used by the man is 49 W. Hope it helps. |
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