[填空题]
A figure skater can incr+4nmp wac3 u4n*jh: fwease her spin rotation0;ku-vdls uw5 rate from an initial rate of 1.0 rev every 2.0 u;0vsl5u- kwd 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? $kg \cdot m^2$