[填空题]
Model a figure skater’;yn -fu au s*cfj564rj5p ,ibas body as a solid cybqg jx fy- t)y7n:9+twlinder and her arms as thin rods, making reaygwy nxtq:) 7j+9f-tbsonable 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.
Post time 2025-2-18 20:00:22
