[填空题]
A figure skater can incw(m z:9e3;cefqn r 8lmrease her spin rotat;k gi.xcbb( ;voc(awqm. 8*sw ion rate from an initial rate of 1.0 rev evecmc8.b ;bo ki .(q;wvg*swax( ry 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? $kg \cdot m^2$