УРЯЗИЗ СИА ХЛО ROW 008 a 18-63. If the 6-kg rod is released from rest at 0 = 30°, determine the angular velocity of the rod at the instant = 0°. The attached spring has a stiffness of k = 600 N/m, with an unstretched length of 300 mm. C gorges sa gota so 400 mm lua uonish k = 600 N/m A 200 mm 300 mm B 200 mm Prob. 18-63