The assembly from Prob. 3/219 is repeated here with the following additional information. The 2-kg collar at C has an outer diameter of 80 mm and is press fitted to the light 50-mm-diameter shaft. Each spoke has a mass of 1.5 kg and carries a 3-kg sphere with a radius of 40 mm attached to its end. The pulley at D has a mass of 5 kg with a centroidal radius of gyration of 60 mm. If a tension T = 20 N is applied to the end of the securely wrapped cable with the assembly initially at rest, determine the initial angular acceleration of the assembly. Neglect friction in the bearings at A and B and state any assumptions.

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400 mm A, 40 mm 3 kg B 100 mm 300 mm D 300 mm 200 mm T