[填空题]
A figure skater can increase heruew3: )(zm s7qtys/g5 kd:bci spx jvi(2l *x.6;oid)prhyu,u bw 5nt+m in rotation rate from an initial rate of 1.0 rev evet*rxivh+j, o)d6 m(;52 wnliupu.bxyry 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? $kg \cdot m^2$