solve thoroughly

points) The turntable shown rotates at a constant rate about the vertical axis. A bar, which is bent at a 90 degree angle, is connected to bearings inside the turn table that allow it to rotate freely, so its angle of inclination, , is an arbitrary function of time. The length of the vertical portion of the bar is L and its mass is m. What are the moments in the bar at point A at the instant when =0 ? (This condition simplifies the algebra considerably.)