[填空题]
Model a figure skater’s body as a solid cylinder and her s+ tza-ik5dd 5arms as thin yt 4i(;5 n5nucw:d owzrods, making reasonable estimates for the dimensions. The(w4:nw t;zdc5noyu i5n calculate 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
