13-91. Using a forked rod, a 0.5-kg smooth peg P is forced to move along the vertical slotted path r = (0.50) m, where 0is in radians. If the angular

position of the arm is0 = GP) rad, where t is in seconds, determine the force of the rod on the peg and the normal force of the slot on the peg at the instant t = 2 s. The peg is in contact with only one edge of the rod and slot at any instant.