[填空题]
Model a figure skater’s jo to8 t/bf*x5 4so/nmbody as a solid cylinder and herc.z9b +jy(fjws 4aki txy2g 01 arms as thin rods, making reasonable estimates for the dimensions. ( +zbcj2tiay1 xykfgjw 0.9s 4Then 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
