[填空题]
A figure skater can increase hnylp l e,zq--fh6rl: yr+9(n her spin rotation rate ujua1rs2i w.lx p: ,u-7yq wp+ecor-.from an initial rate of 1.0 rev every 2.0 s to a final rate of 3pu1ulxe o7rj.w ia,src:p- - u2w+q. y $rev/s$ 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? $kg \cdot m^2$