A small solid sphere of radius r = 1.00 cm and mass m = 0.100 kg at point A is pressed against a spring and is released from rest with the spring compressed 20.0 cm from its natural length. The spring has a force constant k = 20.0 N/m. The sphere rolls without slipping along a horizontal surface to point B where it smoothly continues onto a circular track of radius R = 2.00 m. The ball finally leaves the surface of the track at point C. Find the angle 0 where the ball leaves the track. Assume that friction does no work. Hint - find an expression for the speed of the sphere at point C. The moment of inertia of a sphere is I = 2/smr. P D B R A k