Question
Physics Question on torque
When no external torque acts on a rotating system,
A
angular momentum of the system is not conserved
B
its rotational kinetic energy is conserved
C
its rotational kinetic energy is independent of moment of inertia
D
its rotational kinetic energy is directly proportional to moment of inertia
E
its rotational kinetic energy is inversely proportional to moment of inertia
Answer
its rotational kinetic energy is directly proportional to moment of inertia
Explanation
Solution
The correct option is (D) : its rotational kinetic energy is directly proportional to moment of inertia