Physics - Rotation Question with Solution | TestHub

Four identical uniform solid spheres each of same mass ' $M$ ' and radius ' $R$ ' are placed touching each other as shown in figure with centres A, B, C, D. ${\mathrm{I}}_{\mathrm{A}},{\mathrm{I}}_{\mathrm{B}},{\mathrm{I}}_{\mathrm{C}},{\mathrm{I}}_{\mathrm{D}}$ are the moment of inertia of these spheres respectively about an axis passing through centre and perpendicular to the plane, then