A body having its center of mass at the origin has three of its particles at (a,0,0) (0, a,0), (0,0, a). The moments of inertia of the body about the X and Y axes are

0.2 kgm² each. The moment of inertia about the Z-axis

The moment of inertia of a uniform semicircular wire of mass M and radius r about a line perpendicular to the plane of the wire through the center is

Let I₁ and I₂ be the moments of inertia of two bodies of identical geometrical shape, the first made of aluminum and the second of iron.

A cubical block of mass M and edge a slides down a rough inclined plane of inclination e with a uniform velocity. The torque of the normal force on the block about its center has a magnitude

A thin circular ring of mass M and radius r is rotating about its axis with an angular speed ω. Two particles having mass m each are now attached at diametrically opposite points. The angular speed of the ring will become