[填空题]
A figure skater can wyje.dg8:c+rf )5 sw wincrease her spin rotation rate x 8urdhc(;7ou from an initial rate of 1.0 rev every 2.0 s to a final ( 8huurxd;7 corate 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? $kg \cdot m^2$