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Most Important Selected Qs for JEE AdvancedPhysicsRotational Motion

One quarter of the plate is cut from a square plate as shown in the figure. If ' M ' is the mass of the plate and ' ' is the length of each side, then the moment of inertia of the plate about an axis passing through ' O ' and perpendicular to the plate is

Options

  1. AM c^2 / 8
  2. B3 M c^2 / 4
  3. CM c^2 / 3
  4. D3 M c^2

Correct answer

A. M c^2 / 8

Step-by-step solution

For full square about an axis passing through ' O ' = M t^2 6 by symmetry for remaining portion it must be 3 4 [ M ^2 6 ]= M ^2 8

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