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A crane lifts a mass of 100 kg to a heig...

A crane lifts a mass of `100 kg` to a height of `10m` in `20s`. The power of the crane is `(Take g = 10 ms^(-2))`

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Here, `m=100kg, h=10m, 1=20s`
`P=(W)/(t)=(mgh)/(t)=(100xx9.8xx10)/(20)=490W`
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