[填空题]
Model a figure skater’s body as a solid cylinder km p/.dao b4lxk2;4ytand her ar ji.vruh,:7goms as thin rods, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for a spinning skatervi,g.7h : jruo with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
