Figure 3: A known angular rotation o(t) is applied to one end of a torsional damper. Assume the disk is supported by a frictionless bearing. Note, the damper is a

torsional damper and the spring is a torsional spring. The coordinate 6 measures the rotation of the disk from the state in which the spring is stress-free. Use this Figure for Problem 3. - Derive the equation(s) of motion for the mechanical system in