The flywheel of a machine having weight of 4500 N and radius of gyration of 2 m has cyclic fluctuation of speed from 125 r.p.m to 120 r.p.m. Assuming g 10m/ s2 the maximum fluctuation of energy is
(a) 12822 N-m (b) 24200 N-m
(c) 14822 N-m (d) 12100 N-m