A particle is moving at a uniform speed of 2 ms−1 in a circle of radius 0.5 m. The centripetal acceleration of the particle is:
A particle moves in a circle of radius 4 m clock wise at constant speed of 2 m s−1. If ^x and ^y are unit vectors along x and y axes, respectively, the centripetal acceleration of the particle at the instant half between PQ is given by