Physics
Mechanics
Easy
Question
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?
The correct answer is:
is the moment of inertia of central disc and I' is moment of inertia of rest of the each disc about specified axis.
By parallel axes theorem
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