[填空题]
Model a figure skater’*krjm i51sj 8rs bod2by+ fmdy;; rvy as a 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, and with arms held tightly against her body. ymv;+r2 bf;yd
Post time 2025-2-18 20:00:22
