Question

Rotational Kinematics - Pulley with two masses: Two boxes hang from a solid disk pulley that is free to rotate as the blocks rise/fall. The left box has a mass m1 = 3.6 kg and the right box has a mass m2 = 1.7 kg. The pulley has mass m3 = 3.3 kg and radius R = 0.15 m.

Answer 1

I'm having a problem on 5.). I can upload my handwritten work if you want.

Answer 2

Everything is fine, you simply forgot de 1/2 factor in your final answer.

Answer 3

Thanks, I forgot to close the question :-). I found a nice derivation of this on Yahoo answers and it's all starting to make sense.