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Let vecF be the force acting on a parti...

Let `vecF` be the force acting on a particle having position vector `vecr and vecT` be the torque of this force about the origin. Then

A

`vec(r ).vec(F)=0` and `vec(r ).vec(tau)ne0`

B

`vec(r ).vec(tau)ne0` and `vec(F).vec(tau)=0`

C

`vec(r ).vec(tau)ne0` and `vec(F).vec(tau)ne0`

D

`vec(r ).vec(tau)=0` and `vec(F).vec(tau)=0`

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The correct Answer is:
D
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