[填空题]
Model a figure skater’s body as a solid cylinder and here3k,ojmm 6.k q+mfiz5 arms as kb;+k h.a,s /mua 6;ihq,ij nhthin rods, making reasonable estimates for the dimensions. Then calculatsmhb qhk;.,k h;ja/n+au,6ii e 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
