[填空题]
A figure skater can increase her spis2ae u ,.f1lcu0) rkv3 f8oyyfn ro u 5lde8c8wb/f(xiwd 9tation rate from an initial rate of 1.0 r (blue88f/dcdw x9 w5iev every 2.0 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? $kg \cdot m^2$