2. A flywheel weighs 400 kg and has a radius of gyration of 30 cm about its axis of rotation. It is mounted on a shaft subjected to a moment of 40 kgm. If the flywheel starts from resits speed after 3 seconds will be
A. 3.33 rad/sec
B. 10.9 rad/sec
C. 19.0 rad/sec
D. 16.35 rad/sec