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 ?
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Calculate the moment of inertia of a disc of radius R and mass M, about an axis passing through its centre and perpendicular to the plane.

The moment of inertia of a uniform circular disc of radius R and mass M about an axis passing from the edge of the disc and normal to the disc is.

The moment of inertia of a uniform circular disc of radius R and mass M about an axis passing from the edge of the disc and normal to the disc is.

Adjoining diagram has three disc, inwhcih each has mass M and radius R. Find the moment of inertia of this system about axis xx'.

Seven identical coins are rigidly arranged on a flat table in the pattern shown below so that each coin touches its neighbors. Each coin is a thin disc of mass m and radius r. Note that the moment of inertia of an individual coin about an axis passing through centre and perpendicular to the plane of the coin is m^(2)//2 The moment of inertia of the system of seven coins about an axis that passes through the point P (the centre of the coin positioned directly to the right of the central coin) and perpendicular to the plane of the coins is–

Calculate the moment of Inertia of a semicircular disc of mass M and radius R about an axis passing through its centre and perpendicular to its plane.

Four particles each of mass M are lying symmetrically on the rim of a disc of mass 6 M and radius R. Moment of inertia of this system about an axis passing through one of the particles and prependicular to plane of disc is