[填空题]
A figure skater can ih1j2t akph./ddq6fw* ncrease her spin rotation ratemj6 g6wb: t0ll from an initial rate of 1.0 rev every 2.0 s to a final rate0lgltw6j 6mb: 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? $kg \cdot m^2$