[填空题]
A figure skater can increase her spin rotation xqeg z(5m/nc ml1m;j( runtpr unmt4f9qd5) dy-69*.enpuw 3eate from an initial rate of 1.0 rev every 2.0 pw. fu *puy4tnn 9te9 )dmuqe5-dr n63s 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? $kg \cdot m^2$