1.

A particle moves in a circle of radius 25 cm at two revolutions per second. The acceleration of the particle in m/s2 is(a)  π2(b) 8π2(c) 4π2(d)  2π2

Answer»

Correct Option  (c) 4π2

Explanation:

Since n = 2 , ω = 2π x 2 = 4π rad/s2

So acceleration = ω2r = (4π)2 x 25/100 m/s2 = 4π2



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