1. The problem statement, all variables and given/known data A paint ball fires a ball of putty at a pendulum at a speed of 14 m/s, with a mass of 53g, at an angle of 42 degrees below the horizontal. The pendulum is made of a thin bar 51 cm long and mass of 310 g. The sphere fixed to the end of the pendulum is 17 cm in radius and has a mass of 190g. The pendulum is initially at rest in vertical position, and pivots about a free hinge at its top. The putty sticks to the pendulum at the point L - L/5 on the bar; so the putty is closer to the sphere at the bottom. Find the max. angle that pendulum makes with vertical bar after collision. (Consider putty as point mass). 2. Relevant equations Conservation of angular momentum: Angular Momentum (L) = Iw Li = Lfinal 3. The attempt at a solution Moment of inertia of apparatus after putty sticks: I = m(putty)[L - L/5]^2 + m(bar)L^2 / 3 + 2m(sphere)r^2 / 5 = 0.038 Initial Angular momentum of putty: Li = Lmvsin(theta) = (L-L/5)(0.0053)(14)sin(90+42) Lf = I(calculated above)wf wf = v/L Equate both Li = Lf, isolate v, then using energy conservation to find max height, then find angle. Is this setup correct?