[填空题]
Model a figure skater’s body as a solid cm1zjff fmh;n 6nkn x1)xlcjadx++3++ylinder and her arms2+l:tng2c ga r ivby): 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 g2i:r+vlabcn y:2t)gtightly against her body.
Post time 2025-2-18 20:00:22
