[填空题]
Model a figure skater’srvjfjn2jx +7:hh t 2td9rrrf-m r7)f) body 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 ska )9hrrt 2mfdt 7)fr-hrter with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
