1. The problem statement, all variables and given/known data http://img505.imageshack.us/img505/6741/rodprobbw3.gif 2. Relevant equations Itot= 1/3MrL^2 + 2/5 MsR^2 + Ms(L + R)^2 = 235.69784 Cm= (Mr(L/2) + Ms(L+r))/(Mr+Ms) = 4.915 angular accel = Torque/Itot Torque= 1/2Lmgcos(theta) 3. The attempt at a solution I solved for Itot and Center of mass and got the correct answers but, I am having a difficult time getting the angular acceleration correct. Aa= .5Lmgcos(theta)/(Itot) = .5*6*4*9.8cos31/235.697 = .42767 rad/s^2 which was incorrect Please help dont know what went wrong!