Due to the constraint, the 0.5-kg cylinder C travels along the path described by r = (0....

Due to the constraint, the 0.5-kg cylinder C travels along the path described by r = (0.6 cos θ) m. If arm OA rotates counterclockwise with an angular velocity of = 2 rad/s and an angular acceleration of = 0.8 rad/s² at the instant θ = 30°, determine the force exerted by the arm on the cylinder at this instant. The cylinder is in contact with only one edge of the smooth slot, and the motion occurs in the horizontal plane.