A particle has a displacement of vecs=ha...

A particle has a displacement of `vecs=hati+2hatj+hatk` metre under the action of a force `vec F =3hati -2hatj+5hatk`. What is the work done ?

4 J

5 J

3 J

8 J

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Verified by Experts

The correct Answer is:

`W = vec F cdot vecs =(3hati -2hatj + 5hatk) cdot (hati +2hatj +hatk)`
`=3-4+5=4 J`

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