First slide

Law of conservation of angular momentum

Question

A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass same which one of the following will not be affected?

Moderate

A

Moment of inertia
B

Angular momentum
C

Angular velocity
D

Rotational kinetic energy

Solution

If the radius of the sphere is increased keeping mass same then moment of inertia will increase, angular momentum will remain conserved, angular velocity and rotational kinetic energy will decrease.

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