[填空题]
A figure skater can increase her spin rotation ra fgaa16ktfcvf0)w(/l te from an initial rate rup9-ya ya0c y+ig8 5jv6p s3fof 1.0 rev every 2.0 s to ac98psja-p i y f0u5y arv6yg+3 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? $kg \cdot m^2$