[填空题]
A figure skater can increase her spin rotation rate from an initial rate of ,jh ztlmz:x.h 5,i) lo1.9k2nwpevh3 o-w63dnszj,/ 7xqxy+o jx-t:gx 0 rev eve3jwhe-2 9n-g:y /dvjko+tp x3x6s nzwq, 7oxxry 2.0 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? $kg \cdot m^2$