Question 4. As shown in Fig.4, you release a solid sphere of mass m and radius p from the top of the semicylinder by giving it a slight nudge to the

right, and assume that there is sufficient friction between the semicylinder and the sphere for the sphere to roll without slipping, determine (a) the value of 8 at which the sphere separates from the semicylinder, (b) the velocity of the sphere at the moment of separation, and (c) discuss the change in the separation angle and velocity for the uniform the same mass and radius, releasing from the top of the semicylinder. thin ring of