1. The problem statement, all variables and given/known data Two masses are suspended from a pulley: [PLAIN]http://i.imgur.com/B4x8pzx.png[/PLAIN] mass of pulley = 0.20kg radius = 0.15m constant torque = 0.35Nm due to friction between the rotating pulley and its axle m1 = 0.40kg m2 = 0.80kg What is the acceleration of the suspended masses? 2. Relevant equations Fnet = I[itex]\alpha[/itex] 3. The attempt at a solution I tried to make sense out of this problem using the equation from above initially, but my acceleration was way too big. I know the acceleration is supposed to be somewhat big anyway but it was too big. So instead I searched for helm on google first and found an equation which told me to do this: I = (1/2)mr2 = (1/2)(0.20)(0.5)2 - 0.025kgm2 a = [g(m1 - m2) - [itex]\tau[/itex]/r]/(m1 + m2 + I/r2) a = 9.8(0.80+0.40)-(0.35/0.15)/(0.80+0.40+(0.0025/(0.15)2) a = 1.23 m/s2 If this is right, how can I clean it up to make it relevant to how Fnet = I[itex]\alpha[/itex] is supposed to be set up?