A particle moves in a circle of radius 25 cm at two revolutions per sec. The acceleration of the particle in m/s2 is:

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π2

8 π2

4π2

2π2

answer is C.

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Detailed Solution

r = 25 × 10-2 m, f = 2 /sec ω = 2πf= 4π rad/secAcceleration = ω2 r = (4π)2×25×10-2 = 16×25×10-2π2 m/s2 = 4π2 m/s2

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