A 30-lb uniform cylinder can roll without sliding on a 15°-incline. A belt is attached to...

A 30-lb uniform cylinder can roll without sliding on a 15°-incline. A belt is attached to the rim of the cylinder. and a spring holds the cylinder at rest in the position shown. II the center el the cylinder is moved 2 in. down tin incline and released, determine (a)the period of vibration, (b)tin maximum acceleration of the center of the cylinder.