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Question

The moment of inertia of a thin uniform rod of length l and mass m about an axis passing through about an axis passing through a point at distance l/4 from the centre O and at an angle 60 degrees to the rod is?

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Solution

MI about an axis passing through 0 and inclined at 60°

=ml2sin260°12=ml216

MI about an axis passing through Aand inclined at 60°

=ml216+m(l4)2=ml28


1027133_790480_ans_f64962b3a553457f84cbdb3a04f2c10e.png

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