1. The problem statement, all variables and given/known data A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s. Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (40 kg, 20 cm average diameter, 160 cm tall) plus two rod-like arms (2.5 kg each, 66 cm long) attached to the outside of the torso. The skater then raises her arms straight above her head, where she appears to be a 45 kg, 20 cm diameter, 200 cm-tall cylinder. 2. Relevant equations Conservation of angular momentum Moment of Inertia 3. The attempt at a solution Li = (Ib + 2(Ia))wi wi = 6.2831 rad/s Ib = (1/2)(40)(.1)(.1) Ia = (1/3)(2.5)(.66)2 Lf = (If)(wf) If = (1/2)(45)(.1)2 Li = Lf Solve for wf wf = (.926)(6.2831)/(.225) Any ideas where I went wrong?