The 1.5kg cylinder C travels along the path described by r sin m  0.6   . If arm OA is rotating counterclockwise with an angular velocity of   3 / rad s, determine the force exerted by the smooth slot in arm OA on the cylinder at the instant 60o   . The spring has a stiffness of 100 / N m and is unstretched when 30o   . The cylinder is in contact with only one edge of the slotted arm. Neglect the size of the cylinder. Motion occurs in the vertical plane (which means to account for gravity)