1.

If `rho` is density of the material of a sphere of radius R . Then its moment of inertia about its diameter isA. `(8pi)/(15)rhoR^(5)`B. `(4pi)/(3)rhoR^(5)`C. `(2pi)/(5)rhoR^(5)`D. `(4pi)/(3)rhoR^(4)`

Answer» Correct Answer - A
`I=(2)/(5)MR^(2)=(2)/(5)rho vR^(2)`
`=(2)/(5)rho (4pi)/(3)R^(3)R^(2)`
`= (8pi)/(15)rho R^(5)`.


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