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MHT CET20242 May 2024Morning ShiftPhysicsRotational MotionActual

An annular ring has mass 10 kg and inner and outer radii are 10 m and 5 m respectively. Its moment of inertia about an axis passing through its centre and perpendicular to its plane is

Options

  1. A525 kgm ^2
  2. B625 kgm ^2
  3. C525 gcm ^2
  4. D625 gcm ^2

Correct answer

B. 625 kgm ^2

Step-by-step solution

Quantity for Mass The moment of inertia of the annular ring is aligned I & = 1 2 M (R₁^2+R₂^2 ) & = 10(100+25) 2 =625 kgm ^2 aligned

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