A position dependent force f =(7-2x+3x...

A position dependent force `f =(7-2x+3x^2)` N acts on a body of mass 2 kg and displaces it from x=0 to x=5 m. Determine the amount of work done in joule.

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Work done,
`W=int Fdx=int_0^5 (7-2x+3x^2) dx`
`=[7x-x^2+x^3]_0^5`
`=7xx5-5^2+5^3=35-25+125=135 J.`

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