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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.

Text Solution

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Work done = Area under F - s graph
(or) `W_(AB) = W_(AP) + W_(PQ) + W_(QR) + W_(RB)`
`= 10 xx 1 + (1)/(2) (10 + 15) xx 1 + (1)/(2) xx 1 xx 15 - (1)/(2) xx 1 xx 15`
= 22.5 J
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