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NEET 2008 (AIPMT) · Moment of Inertia & Radius of Gyration

Moment of Inertia & Radius of Gyration question from NEET 2008 (AIPMT)

Q186NEET 2008 · AIPMTEasy

Moment of Inertia & Radius of Gyration

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

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Answer: (d)

  1. Disc: Kd=R2K_d = \frac{R}{\sqrt{2}}; ring: Kr=RK_r = R.
  2. Kd:Kr=1:2K_d : K_r = 1 : \sqrt{2}
  3. So the answer is (d) 1:21 : \sqrt{2}.
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