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Two particles, A and B are moving in con...

Two particles, A and B are moving in concentric circles in anticlockwise sense in the same plane with radii of the circles being `gamma_(A) = 1.0 m` and `gamma_(B) = 2.0 m` respectively. The particles move with same angular speed of `omega = 4 rad//s`. Find the angular velocity of B as observed by A if
(a) Particles lie on a line passing through the centre of the circle.
(b) Particles lie on two perpendicular lines passing through the centre.

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