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Particles a and b move in opposite direc...

Particles a and b move in opposite direction around a circle with same angular speed `omega`, as shown. At t=0 they are both at the point `vecr=vect vecj`, where l is the radius of the circle. The magnitude angular velocity of 'a' w.r.t. 'b' at time t=t

A

Zero

B

`omega cot(omegat)`

C

`omega sin omega t`

D

`2 omega`

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