[填空题]
Model a figure skater’s body qdy; ee+im(x9 . ph(ajjt8oje;a45n gas a solid cylinder and her arms as thin rods, making reasonable estimates for the dimensions. Then calculate the ratio op;84g5(n joatje j ah.f 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
