[填空题]
Model a figure skatena1cpriw2qm pq. 61z8r’s body as a solid cylinder and her arms eum.-atn khr1/;qz* ras thin rods, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for a spinningrzn erhtq*u;. a1 /-mk skater with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
