[填空题]
Model a figure skater’s b+u2 dfj9::yhunpl2 (: -vwf*dt cti xxody as a solid cylindy .twn3t1si(yer 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, andtnys1y.i 3(w t with arms held tightly against her body.
Post time 2025-2-18 20:00:22
