A solid cylinder of mass 3 kg and radius 10 cm is rotating about its axis with a frequency of 20/π. The rotational kinetic energy of the cylinder
A. 10 π J
B. 12 J
C. 6×102π J
D. 3 J
Answer:B
A solid cylinder of mass 3 kg and radius 10 cm is rotating about its axis with a frequency of 20/π. The rotational kinetic energy of the cylinder
A. 10 π J B. 12 J C. 6×102π J D. 3 J