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Two solid spheres A and B each of radius...

Two solid spheres `A` and `B` each of radius `R` are made of materials of densities `rho_A` and `rho_B` respectively. Their moments of inertia about a diameter are `I_A` and `I_B` respectively. The value of `I_A/I_B` is

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`(I_(A))/(I_(B))=(4/3 piR^(3)rho_(A))/(4/3piR^(3)rho_(B))=(rho_(A))/(rho_(B))`
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