[填空题]
Model a figure skater’+va 3 +9 svetq(f+ahmzk;p k7x9)c srws body as a solid cylinder and her arms as thin rods, making reasonable estimates for the dimensions. Then calculate the ratio of the ax) kcpkr;97 swngular speeds for a spinning skater with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
