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AP EAMCET202119 Aug 2021Morning ShiftPhysicsRotational MotionActual

Which of the following type of wheels of same mass and radius will have largest moment of inertia?

Options

  1. ARing
  2. BAngular disc
  3. CSolid disc
  4. DCylindrical disc

Correct answer

A. Ring

Step-by-step solution

A wheel is rotated about its central axis, therefore we will compare all the moments of inertia of various shapes about their central axis. Moment of Inertia of Ring of mass M   and radius R   about its central axis is M R 2 Moment of inertia of solid disc of M   and radius R   about its central axis is M R 2 2 Moment of inertia of the annular disc of mass M   with outer radius R   and inner outer radius r   about its central axis is M R 2 + r 2 2 Moment of inertia of the cylindri

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