The slotted arm revolves in the horizontal plane about the fixed vertical axis through point O. The 3-lb slider C is drawn toward O at the constant rate of 2 in. /sec by pulling the cord S. At the instant for which r = 9 in., the arm has a counterclockwise angular velocity ω = 6 rad /sec and is slowing down at the rate of 2 rad /sec². For this instant, determine the tension T in the cord and the magnitude N of the force exerted on the slider by the sides of the smooth radial slot. Indicate which side, A or B, of the slot contacts the slider.

B S