[填空题]
A figure skater can incr7uzhl-)yf8sm nef awixk /73 6ease her spin rotation rate frodva,e -)j8htlzv9)y/x 7cru db f9r0 em an initial rate of 1.0 rev every 2.0 s to a final rate of 3 7ed9z)xu 8,ftl-0r bvc)h v 9jray /ed$rev/s$ 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? $kg \cdot m^2$