[填空题]
A figure skater can inc 3dpi3( vo/uc9lhqf7laua372 cy2 dotoiz,:77a gcxhrease her spin rotation rate from an initial rate of 1.0 rev every 2.0 s to ig 2z,tcdh77 ua a3acoy :x72oa 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? $kg \cdot m^2$