A body moves from point A to B under the...

A body moves from point A to B under the action of a force, varying in magnitude as shown in figure. Obtain the work done. Force is expressed in newton and displacement in meter.

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Work done = area under F-s graph
`W_(AB)=W_(AP)+W_(PQ)+W_(QR)+W_(RB)`
`=10xx1xx1/2(10+15)xx1+1/2xx1xx15-1/2xx1xx15`
`=22.5J`

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