1. The problem statement, all variables and given/known data 10-42 shows particles 1 and 2, each of mass m, attached to the ends of a rigid massless rod of length L1 + L2, with L1 = 0.80 m and L2 = 6.2 m. The rod is held horizontally on the fulcrum and then released. What are the magnitudes of the initial accelerations of (a) particle 1 and(b) particle 2? see http://www.webassign.net/hrw/hrw7_10-43.gif for image. 2. Relevant equations Tau=I alpha 3. The attempt at a solution I am not sure if the center of mass is important, since it will be rotating about a fulcrum. So i'm not sure if I should use I=mr^2 or I=mr^2 +mh^2. Also, would I set Torque equal to mg? Since there are no other forces identified I would assume this. I have no other clues as to how to go about this.