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A particle moves in a circle of radius 4...

A particle moves in a circle of radius 4.0 cm clockwise at constant speed of `2 ms^(-1)`. If `hat(x)` and `hat(y)` are unit acceleration vectors along X-axis and Y-axis respectively (in `cms^(-2)`), find the acceleration of the particle at the instant half way between P and Q. Refer to Fig.5.14 (a).

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