A heavy circular disc of mass `M` is revolving in a horizontal plane with angular speed `omega_(0)` about its center which is fixed. An insect of mass `m` walks from the center to the edge and then files away. Find the final angular speed of disc.

A heavy circular disc is revolving in a horizontal plane about the centre which is fixed. An insect of mass 1/n th that of the disc walks from the centre along a radius and then flies away. Show that the final angular velocity is n/(n+2) times the original angular velocity of the disc.

A uniform disc of mass M and radius R is rotating about a horizontal axis passing through its centre with angular velocity omega . A piece of mass m breaks from the disc and flies off vertically upwards. The angular speed of the disc will be

A uniform disc of radius 'a' and mass 'm' is rotating freely with angular speed omega in a horizontal plane about a smooth fixed vertical axis through its centre. A particle of mass 'm' is then suddenly attached to the rim of the disc and rotates with it. The new angular speed is

A thin uniform circular disc of mass M and radius R is rotating in a horizontal plane about an axis perpendicular to the plane at an angular velocity omega . Another disc of mass M / 3 but same radius is placed gently on the first disc coaxially . the angular velocity of the system now is

A uniform disc of radius a and mass m, is rotating freely with angular speed omega in a horizontal plane about a smooth fixed vertical axis through its centre. A particle, also of mass m, is suddenly attached to the rim of the disc of the disc and rotates with it. The new angular speed is

A uniform disc of mass M and radius R is rotating in a horizontal plane about an axis perpendicular to its plane with an angular velocity omega . Another disc of mass M/3 and radius R/2 is placed gently on the first disc coaxial. Then final angular velocity of the system is

Auniform disc of mass M and radius R is rotating in a horizontal plane about anaxis perpendicular to its plane with an angular velocity omega . Another disc of mass M/3 and radius R/2 is placed gently on the first disc coaxially. Then final angular velocity of the system is

A circular disc is rotating in horizontal plane about vertical axis passing through its centre without friction with a person standing on the disc at its edge. If the person gently walks to centre of disc then its angular velocity