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Find the amount of work done by a labor ...

Find the amount of work done by a labor who carrier n bricks of m kilogram each to the roof of a house h meter high by climbing a ladder.

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Verified by Experts

Here, force exerted by the labourer in carrying n briks `("each of mass m kg")`,
`F = (nm) g =`" newton"`
displacement of the bricks, s =h metre
work done by the labourer, `W =Fxxs = (mng newton)xx(h metre)`
= mngh joule
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