[填空题]
A figure skater can increase her spin rotation rate li wh-lo71*k qgd ;(fqfrom ancyz8*u 9- rcaw initial rate of 1.0 rev every 2.0 s ca*w8rc9 zy-uto 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? $kg \cdot m^2$