[填空题]
A figure skater can increase her spbq(6roqd 9y l:in rotation rate from an initial ratu;p .f/ vu95gc 8ga5xfrig4b le of 1.0 rev every 2.0 s to a fina5uailfv grbu /f5x84p ;gcg 9.l 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? $kg \cdot m^2$