[填空题]
Model a figure skater’s body as a solid cylintg.nl-bp w8i 8 0pt7 pmi/1vhvder and am,a,e ba7sb: her arms as thin rods, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for 7bb eaa:,a,s ma spinning skater with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
