[填空题]
Model a figure skater’sdfhf+b/1/f wm body as wr 3d6qh*4 xkma solid cylinder 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, an whx kqr3d4*m6d with arms held tightly against her body.
Post time 2025-2-18 20:00:22
