A bob of mass 10 kg is attached to a wire 0.3 m long . Its breaking stress is 4.8 x 107 N/m2. The area of cross-section of the wire is 10-6 m2. What is the maximum angular velocity with which it can be rotated in a horizontal circle ?
(a) 8 rad/s
(b) 4 rad/s
(c) 2 rad/s
(d) 1 rad/s