A disc of mass "4m" and radius "R" is rotating freely with angular velocity `omega_(0)`=`18rad`/`s` about its axis,which is fixed and vertical.A small particle of mass "m" is placed at periphery of the disc gently and it starts rotating with disc,then new angular speed of disc in rad/s 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 disc of mass m and radius R rotating with angular speed omega_(0) is placed on a rough surface (co-officient of friction =mu ). Then

A uniform circular disc of mass 50kg and radius 0.4 m is rotating with an angular velocity of 10 rad s^(-1) about its own axis, which is vertical. Two uniform circular rings, each of mass 6.25 kg and radius 0.2 m, are gently placed symmetrically on the disc in such a manner that they are touching each other along the axis of the disc and are horizontal. Assume that the friction is large enough such that the rings are at rest relative to the disc and the system rotates about the original axis. The new angular velocity (in red s^(-1)) of the system is

A disc of mass 1 kg and radius 0.1 m is rotating with angular velocity 20 rad/s. What is angular velocity (in rad/s) if a mass of 0.5 kg is put on the circumference of the disc ?

A disc of mass 2 kg and radius 0.2 m is rotating with angular velocity 30 "rad s"^(-1) . What is angular velocity, if a mass of 0.25 kg is put on periphery of the disc ?

A disc of mass 1 kg and radius 0.1 m is rotating with angular velocity "20 rad s"^(-1) . What is angular velocity, if a mass of 0.25 kg is put on periphery of the disc?

A disc of mass m, radius r and carrying charge q, is rotating with angular speed omega about an axis passing through its centre and perpendicular to its plane. Calculate its magnetic moment

A disc of mass m, radius r and carrying charge q, is rotating with angular speed omega about an axis passing through its centre and perpendicular to its plane. Calculate its magnetic moment

A smoothh disc is rotating with uniform angular speed omega about a fixed vertical axis passing through its centre and normal to its plane as shown. A small block of mass m is gently placed at the periphery of the disc. Then (pickup the correct alternative or alternatives)

A horizontal disc rotates freely with angular velocity omega about a vertical axes through its centre. A ring having the same mass and radius as the disc, is now gently placed coaxially on the disc. After some time, the two rotate with a common angular velocity. then.