The disk of mass md is originally at rest, and the spring holds it in equilibrium. A couple moment M is then applied to the disk as shown. Determine how far the center of mass of the disk travels down along the incline, measured from the equilibrium position, before it stops. The disk rolls without slipping.

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Given: md = 20 kg M = 30 N-m k = 150 m 8 = 30 deg r = 0.2 m 8 = 9.81 m 2 S