1. The problem statement, all variables and given/known data A thin, uniform rod of mass M is supported by two vertical strings. Find the tension in the remaining string immediately after one of the strings is severed 2. Relevant equations I = 1/3MR^2 (thin rod rotating at end) 3. The attempt at a solution So I was thinking: Torque = Moment of Inertia * angular accel R*Mg = (1/3*MR^2)(acm/R) 3g = acm then F = ma macm = Mg - T Unfortunately this gives me the incorrect answer (it is supposed to be 1/4Mg). Does anyone see where I am going wrong? It seems like this should be a rather straightforward problem.