[填空题]
Model a figure skater’s body as a eu+::c /jp yej p-uopz5*/skh s wh29uv dc0:ibj.6sht olid cylinder and her arms as thin rods, making reasonable estimates for the dimensions. T9u:jshbtd.hc wv 620i hen 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
