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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 ?

A

24 J

B

18 J

C

12 J

D

6 J

Text Solution

Verified by Experts

The correct Answer is:
a
Work done
`W=vecF.vecS=(2hati+9hatj+12hatk).2hatk=24 J`
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