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A force vec(F)=4hati-10 hatj acts on a b...

A force `vec(F)=4hati-10 hatj` acts on a body at a point having position vector `-5hati-3hatj` relative to origin of co-ordinates on the axis of rotation. The torque acting on the body is

A

`38 hatk`

B

`-25 hatk`

C

`62 hatk`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
`tau=vec(r)xxvec(F)`
`=50hatk+12 hatk=62 hatk`
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