Q98 / 120 · VITEEE 2019 · Physics

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 ?

  • A
    Angular velocity
  • Correct answer
    B
    Angular momentum
  • C
    Moment of inertia
  • D
    Rotational kinetic energy

Solution

Taking the same mass of sphere if radius is increased then moment of inertia, angular velocity and rotational kinetic energy will change but according to law of conservation of momentum, angular momentum will not change.

Hence, the correct answer is option: 'B'.

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