[填空题]
A figure skater can increase h; fphv.g53 /q glias6per spin roke(q0ejrym88 q svcdw)5qo+ v51 i,ng tation rate from an initial rate of 1.0 rev every 2.0 s5erqo)g8 mcknidqvsy w + 8q5,v( 1ej0 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? $kg \cdot m^2$