[填空题]
Model a figure skater’s body as a solid cylinder and py ohe55ea2mj g-++lf her arms as thin rod)bt s/9nkh ,hrs, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for ak/ h)hs,t9nr b spinning skater with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
