[填空题]
A figure skater can increase her spin rotation rate f1 uvr y jinhbhcg-p*1 /4/tjuo y6n*6jrom an nm oeg3lymj4w:e r71r:- a9lp initial rate of 1.0 rev every 2.0 s to a final r3:w:47g1onp l-ere a9rmj lm yate 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? $kg \cdot m^2$