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A disc is rotating with angular velocity...

A disc is rotating with angular velocity `omega`. A force F acts at a point whose position vector with respect to the axis of rotation is r. The power associated with torque due to the force is given by

A

`(vecr xx vec F).vec omega`

B

`(vecr xx vecF)xx vecomega`

C

`vecr.(vecF xx vecw)`

D

`vecr xx (vecF.vecomega)`

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The correct Answer is:
A
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