[填空题]
A figure skater can rb 5 *b7tv;r*vw ig0pbiwerx6*k.ny9 sss:pe5 q s)mp6ncrease her spin rotation rate from an initial rate of 1.0 rev every nyrs)wsxe s: 56mk.6 *peq s9p2.0 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? $kg \cdot m^2$