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NEET2008PhysicsRotational MotionActual

The ratio of the radii of gyration of a circular disc to that of a circular ring, each of same mass and radius, around their respective axes is

Options

  1. A2 : 3
  2. B3 : 2
  3. C1: 2
  4. D2 : 1

Correct answer

C. 1: 2

Step-by-step solution

aligned & l_ diso l_ ring = M R^2 / 2 M R^2 = M K_ disc ^2 M K_ ring ^2 & K_ dise K_ ring = 1 2 aligned

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