A uniform sphere with mass 28.0 kg and radius 0.380 m is rotating at constant angular velocity about a stationary axis that lies along a diameter of the  sphere. If the kinetic energy of the sphere is 236 J, what is the tangential velocity of a point on the rim of the sphere?

A CD has a diameter of 12.0 cm. If the CD is rotating at a constantangular velocity of 20 radians per second, then the tangentialvelocity of a point on the circumference is

A. 2.0 m/s.
B. 1.9 m/s.
C. 1.5 m/s.
D. 1.2 m/s.
E. 1.0 m/s.

A solid uniform sphere of mass "m" and radius "r" rolls without slipping down an incline of height "h".

What forms of mechanical energy is associated with the sphere at any point along the incline when its angular speed is ?

Determine the ratio of the sphere's rotational kinetic energy to its total kinetic energy?