[填空题]
A figure skater can increase heep7 8c0*c nfwkr spin rotatuf9 / dq91z uqoj 1)ztibfugd3*bj7u .ion rate from an initial rate of 1.0 rej gq9d)u9*uz1tdqz /1u j.bu ifob3f 7v every 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? $kg \cdot m^2$