[填空题]
A figure skater can increasxj z5cp0 ba(w;uus0v5e her spejziifu7i 2p 8yd840 hin rotation rate from an initial rate of 1.0 rev every pi7z8j02ye d4i fu8 ih2.0 s to a final rate of 3 $rev/s$ If her initial moment of inertia was 4.6 kg*$m^2$ what is her final moment of inertia? How does she physically accomplish this change? $kg \cdot m^2$