[填空题]
Model a figure skater’s body as a solid 8;h4unq,:bchy3x zjfkjocw;i 0a13 c cylinder and her arms as thin rods, makib; cj q fcin0zca38o3;y 4xu:w ,hj1hkx ibncqfm9 ;*-t 97cfing reasonable estimates for the d qt*7fi9xm 9b;cnif-cimensions. 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
