[填空题]
A figure skater can increase her spin rotation rate from anpmga8 pqh9 e1g0 r)t9o)t.fzn in.t-v fa92(45yu jv98 lsh ldx, *ltkmjkty;rbitial rate of 1.0 * ; 2tsjlx9t5lj m-k9ku( h,tvfyar8v .d4by lrev 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? $kg \cdot m^2$