Due to a force of (6hati+2hatj)N the dis...

Due to a force of `(6hati+2hatj)N` the displacement of a body is `(3hati-hatj)`, then the work done is

16 J

12 J

8 J

Zero

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The correct Answer is:

Work done `= vec(F).vec(s)`
`= (6hat(i)+2hat(j)).(3hat(i)-hat(j))=6xx3-2xx1=18-2=16J`

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