Two disks of identical mass but different radii (

r

and

2r

) are spinning on frictionless bearings at the same angular speed

\\\\omega _(0)

but in opposite directions. The two disks are brought slowly together. The resulting frictional force between the surfaces eventually brings them to a common angular velocity.\ What is the magnitude of that final angular velocity in terms of

\\\\omega _(0)

?

Two disks of identical mass but different radii ( r and 2r ) are spinning on frictionless bearings at the same angular speed 0 but in opposite directions. The two disks are brought slowly together. The resulting frictional force between the surfaces eventually brings them to a common angular velocity. What is the magnitude of that final angular velocity in terms of 0