The 30 kg pendulum has its mass center at G and a radius of gyration about point G of kg = 300 mm. If it is released from rest when = 0, determine its angular velocity at the instant 0 = 90. Spring AB has a stiffness of k = 300 N/m and is unstretched when 0 = 0. 0.35 m 0.1 m G -0.6 m ww B 300 N/m