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MHT CET202013 Oct 2020Morning ShiftPhysicsRotational MotionActual

A ring and a disc have same mass and same radius. The ratio of moment of inertia of a ring about a tangent in its plane to that of the disc about its diameter is

Options

  1. A6: 1
  2. B4: 1
  3. C2: 1
  4. D8: 1

Correct answer

A. 6: 1

Step-by-step solution

Moment of inertia of a ring about a tangent in its plane is given by I= 3 2 M R² Moment of inertia of a disc about its diameter is given by I^ = 1 4 M R² I I^ =6

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