18-25. The 30-kg disk is originally at rest, and the spring is unstretched. A couple moment M-80 N m is then applied to the disk as shown. Determine how far the center of mass of the disk travels along the plane before it momentarily stops. The disk rolls without slipping. Do not solve this problem as presented. Instead, use the information in the problem to do the following: a) Draw the complete freebody diagram for the disk. M-80 N m 0.5 m k = 200 N/m b) Write an equation relating the force in the spring to the translational displacement of the disk. c) Write an equation relating the translational and rotational displacements of the disk to each other. d) Use the freebody diagrams to write the translational form of Newton's Second Law (EF = Ma) for the disk. e) Use the freebody diagrams to write the rotational form of Newton's Second Law (M = la) for the disk.