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Find the torque (vectau=vecrxxvecF) of a...

Find the torque `(vectau=vecrxxvecF)` of a force `vecF=-3hati+hatj+3hatk` acting at the point `vecr=7hati+3hatj+hatk`

A

`14hati-38hatj+16hatk`

B

`4hati+4hatj+6hatk`

C

`-14hati+38hatj-16hatk`

D

`-21hati+3hatj-5hatk`

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The correct Answer is:
A
`vectau=vecrxxvecF`
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ALLEN-BASIC MATHS-EXERCISE-1
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  2. If hati,hatj and hatk represent unit vectors along the x,y and z-axes ...

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