1. The problem statement, all variables and given/known data Problem with diagram here 2. Relevant equations I=(1/3)MR2 (I believe the formula given in the problem is incorrect since it is pivoting on one end rather than the center of mass) KE=(1/2)Iω2+(1/2)Mv2 L=Iω=MvR 3. The attempt at a solution a. True, the velocity is still going in the same direction at the instant of the collision. False, it is a perfectly inelastic collision, which means kinetic energy is not conserved. True, no real reason why. I just think it's true? No forces seem to be working on the center of mass during the collision. True, no external forces/torque are working on the collision at that moment. b. (M/3)Lv=(1/3)ML2ω+(M/3)ML2ω (M/3)Lv=(2/3)ML2ω v/(2L)=ω c. KE=(1/2)Mv2+(1/2)Icmω2 I have no idea how to approach this correctly other than the possible use of the parallel axis theorem. This was as far as I got The answer is given: (5/6)MgL+(1/12)Mv2 Can someone please explain to me the steps to get to that answer?