1. The problem statement, all variables and given/known data A thin stick of mass M = 2.8 kg and length L = 2.2 m is hinged at the top. A piece of clay, mass m = 0.8 kg and velocity V = 2.7 m/s hits the stick a distance x = 1.65 m from the hinge and sticks to it. Q2: What is the ratio of the final mechanical energy to the initial mechanical energy? 2. Relevant equations 1. Lf = Li (conservation of angular momentum) 2. Is = ⅓ML2 3. Ic = mx2 4. Krot = ½Iω2 5. Kl =½mVt2 3. The attempt at a solution I can't find the problem with my working in part 2; wondering if someone can point me in the right direction please. I calculated the angular velocity as 0.53 rad/s.