[填空题]
Model a figure skater’k(/z.fa.5d .fjsvs0 * yqsw ues body as a solid xz4f ;g+7pk oscylinder and her arms as thin rods, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for a spinning skater with outstretched arms, and with arms held tightly againstko;z7 pg+xsf 4 her body.
Post time 2025-2-18 20:00:22
