A particle is moving on a circle of radius R with velocity V. another particle is moving on a concentric circle of radius 2R with some velocity V. Then which is correct?
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you know that ... that the velocities are moving in only +i direction.. the magnitude of its acceleration will be in + z direction so it is 90 i.e. perpendicular to the v...
applyin cos 90°
u get the req answer
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