[填空题]
Model a figure skater’s body df/ptf3.+ rh+*w w 2e pzi5izaas a solid cylinder and her arms as thin rods, pxd+1ogr, bl 7b yjp1gg5v* 0wmaking reasonable estimates fovpggjdx 5pb+g, w*01lyo 17 rbr 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
