Ice skaters often end their performances with spin turns, where
they spin very fast about their center of mass with their arms
folded in and legs together. Upon ending, their arms extend
outward, proclaiming their finish. Not quite as noticeably, one leg
goes out as well. Suppose that the initial moment of inertia of a
skater for arms and legs in is 0.90 kg⋅m2 while with the final
moment of inertia with arms out and one leg extended is 3.5 kg⋅m2 .
If she starts out spinning at 5.0 rev/s , How much thermal energy
was created while she was spinning?