[填空题]
Model a figure skater’s body as a solid cylindexafv86d3fiyw2u+8oi5zpfwps 3 r *-qr and her arms as thin r1uja. zc2g/kdue 98cu8;z-lb 8wwpkwods, making reasonable estimates for the dimensions. Then calculatwkz l;udb1ug je .kpc98a8 z8u2c-/w we 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
