The flywheel of a steam engine has a radius of gyration of 1 m and mass of 2500 kg. the starting torque of the engine is 2500 N-m. The kinetic energy of such a flywheel after 10 sec from rest position will be
1
120 kN-m
2
135 kN-m
3
130 kN-m
4
125 kN-m