The 0.2-kg pin P is constrained to move in the smooth curved slot, which is defined by the lemniscate r = (0.6 cos2 theta) m. Its motion is controlled by the rotation of the slotted arm OA. which has a constant clockwise angular velocity of theta = -3 rad/s. (Figure 1) Determine the force arm OA exerts on the pin P when theta = 0 degree. Motion is in the vertical plane. Express your answer to three significant figures and include the appropriate units.