A particle moves on a circular path of radius 0.2 m with an angular acceleration 0.25 rad/s2. The particle starts from rest, find the time at which the magnitude of radial acceleration and the magnitude of tangent acceleration are same.

Q: A particle moves on a circular path of radius 0.2 m with an angular acceleration 0.25 rad/s2. The particle starts from rest, find the time at which the magnitude of radial acceleration and the magnitude of tangent acceleration are same.

(a) 1 s

(b) 2 s

(c) 3 s

(d) 4 s

Ans: (b)