[填空题]
Model a figure skater’s body as a solid cyld.ndv mit/7 k-e sr/o /;(jc iyb7gh;rinderju.w)qpv u;:n26;s tupg(n m m and her arms as thin rods, making reasonable estimates for the dimensions. Then mu: g2ppnwmq; 6u;.(ustnjv ) 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
