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Find the magnitude of the linear acceler...

Find the magnitude of the linear acceleration of a particle moving in a circle of radius 10 cm with uniform speed completing the circle in 4s.

A

`5pi cm//s^(2)`

B

`2.5pi cm//s^(2)`

C

`5pi^(2) cm//s^(2)`

D

`2.5pi^(2)cm//s^(2)`

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