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Considering two vectors,F = (4hati - 1...

Considering two vectors,`F = (4hati - 10hatj)` netwon and `vecr = (-5hati - 3hatj)` m compute `(vecrr xx vecF)` and states what physical quaninty it respresents ?

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As `vecF=(4hati-10hatj+0hatk)andvecr=(-5hati-3hatj+0hatk)`
`(vecrxxvecF)=|(hati,hatj,hatk),(x,y,z),(F_(x),F_(y),F_(z))|=|(hati,hatj,hatk),(-5,-3,0),(4,-10,0)|`
i.e., `(vecrxxvecF)=hatk(50+12)=62hatkN-m`
The given physical quantity `vecrxxvecF` represents the torque (i.e. moment of force) as `vecF` represents force and `vecr` is the position vector.
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