[填空题]
Model a figure skater’s body as ,t -mhkcy5ac )a solid y4bfdw ,o)f s9o0rl. x/w0l1vg:ivgncylinder and her arms as thin rods, making reasonable estimates for:v w l,df4b0/fso)ognwiry091 vx gl. the dimensions. Then calculate the ratio of the angular speeds for a spinning skater with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
