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Questions  

In the given figure, a = 15 m/s2 represents the total acceleration of a particle moving in the clockwise direction in a circle of radius R=2.5 m at a given instant of time. The speed of the particle is

 

a
5.7 m/s
b
6.2 m/s
c
4.5 m/s
d
5.0 m/s

detailed solution

Correct option is A

acos 300 = ac  = v2R⇒v2 = aR×32 ⇒ v2 = 32.47 ⇒ v = 5.7 m/s

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