A body is subjected to a constant force ...

A body is subjected to a constant force `vecF` in newton given by : `vecF=2hati+9hatj+12hatk`, where `hati,hatj`and `hatk` are unit vectors along x,y and z-axis respectively. What is the work done by this force in moving the body through a distance of 2 m along 2-axis ?

24 J

18 J

12 J

6 J

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Verified by Experts

The correct Answer is:

Work done, `W=(2hati+9hatj+12hatk).2hatj=18J`

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