A force vecF=(3hati+4hatj) newton acts o...

A force `vecF=(3hati+4hatj)` newton acts on a body and displaces it by `vecS=(3hati+4hatj)` metere. The work done `(@=vecF.vecS)` by the force is :

10J

12 J

19 J

25 J

Text Solution

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The correct Answer is:

`W= vecF*vecS= (3hati+4hatj)*(3hati+4hatj)=9+16= 25J`

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