Seven identical disc are arranged in a hexagonal, planar pattern so as to touch each neighb
Channel: Doubtnut
Date: 2020-01-19

Seven identical disc are arranged in a hexagonal, planar pattern so as to touch each neighbour, as shown in the figure. Each disc has mass `m` and radius `r`. What is the moment of inertia of the system of seven disks about an axis passing through the centre of central disk and normal to plane of all disks ? .