5. The two 12 kg slender rods are pin connected and released from rest at the...

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5. The two 12 kg slender rods are pin connected and released from rest at the position 0 = 60 (fig. 5). The spring is initially extended and has an unstretched length of 1.5 m. Neglect the mass of the roller at C. The mass moment of inertia of a rod with mass m and length 1 about its center of mass G is 1 IG = -ml. 12 (a) (10 marks) Determine the change in kinetic energy and potential energy of the system when varies from 60 to 0. (b) (10 marks) Determine the angular velocity of rod BC when the system is at the position = 0 B 2 m k = 20 N/m Figure 5 2 m 5. The two 12 kg slender rods are pin connected and released from rest at the position 0 = 60 (fig. 5). The spring is initially extended and has an unstretched length of 1.5 m. Neglect the mass of the roller at C. The mass moment of inertia of a rod with mass m and length 1 about its center of mass G is 1 IG = -ml. 12 (a) (10 marks) Determine the change in kinetic energy and potential energy of the system when varies from 60 to 0. (b) (10 marks) Determine the angular velocity of rod BC when the system is at the position = 0 B 2 m k = 20 N/m Figure 5 2 m