Topic : moment of inertia

Two particles of masses 5 kg and 10 kg are placed along x-axis at positions x = 1 m and x = 3 m. The moment of inertia of the system about an axis respectively passing through centre of mass and parallel to y-axis is

Two circular rings (of same material) are of same thickness. The diameter of first ring is twice that of second. The moment of inertia of first ring as compared to that of second is

The moment of inertia of a thin uniform circular disc of mass m and radius R about an axis, which is tangential to the circumference of the disc and parallel to the plane of disc, is

The moment of inertia of a square lamina of side $a$ and mass $M$ about an axis passing through the centre of mass and perpendicular to the plane is