[填空题]
A figure skater can increase her spin rotatioro(z trl-dardsi;,w 67 )qqw4n rate from an initial rate of 1.yk7a3t zknm 5a6kz,+ z0 rev,akk3n z5z z +6a7ymkt 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? $kg \cdot m^2$