[填空题]
Model a figure skater’s bodyj. 5m dhp-fv) ay jr)3qk3yk7ijj 5:tj as a solid cylig v(rfpq l5i84nder and her arms as thin rods, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for a spinning skater with r 4gli fv(q85poutstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
