One coolie takes 1 min to raise a suitcase through a height of 2 ~m but the second coolie takes 30 ~s to raise the same suitcase to the same height. The powers of two coolies are in the ratio.

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Correct answer: D. 1: 2

Here, work done =m g h As, m and h is same, so work done will be same in both cases. Power, P= Work done (W) Time taken (t) P₁ P₂ = t₂ t₁ = 30 60 = 1 2 or 1: 2

One coolie takes 1 min to raise a suitcase through a height of 2 ~m but the second coolie takes 30 ~s to raise the same suitcase to the same height. The powers of two coolies are in the ratio.

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