[填空题]
Model a figure skater’s body as a solid cylindehw,p8jvzamz :9 on:k*kk,gs, r a *p0a4xp howd9j /r-vcnd her arms as thin rods, making reasonable estimates for the dimensions. Then calcuh p*dwp/vxj0r4- oa 9clate the ratio of the angular speeds for a spinning skater with outstretched arms, and with arms held tightly against her body.
