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If F is the force acting on a particle h...

If F is the force acting on a particle having position vector `vec r` and `vec tau ` be the torque of this force about the origin , then,

A

`vec r. vec taugt 0 and vecF . Vec tau lt 0`

B

`vec r . vec tau = 0 and vec F . Vec tau = 0`

C

`vec r . Vec tau = 0 and vec F .vec tau != 0`

D

`vec r.vec tau != 0 and vec f . Vec tau = 0`

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