Class 11 Physics Rotational Motion Theorem of perpendicular axis

Theorem of perpendicular axis

  • Perpendicular Axis Theorem: The moment of inertia of a planar body (lamina) about an axis perpendicular to its plane is equal to the sum of its moments of inertia about two perpendicular axes concurrent with perpendicular axis and lying in the plane of the body.

  • Applicable only to planar bodies.



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