A hollow ball has mass M=2.0kg, radius R=0.35m, and moment of
inertia about the center of mass I=(2/3)MR2. The ball is
thrown without bouncing, to the right with an initial speed 2.0m/s
and backspin. The hoop moves across the rough floor (coefficient of
sliding friction = 0.25) and returns to its original position with
a speed of 0.5 m/s. All surfaces and the hoop may be treated as
ideally rigid. Develop an expression for angular velocity of the
hoop as...