[填空题]
Model a figure skater’s body as a sc9tgyiz2.1kyilednwa 06; +cqw ( f9nolid cylinder and her arms as thin roziy 909deg :74,yp(vxe k)j(ecnkfadds, making reasonable estimates for the dimensions. Then calculate the ratio of the angular speeds for a spinni9fy4eckj gzed)nypi9,(dk xa0 :v (7eng skater with outstretched arms, and with arms held tightly against her body.
Post time 2025-2-18 20:00:22
