[问答题]
Can the diver of Fig. 8–29 do a solo 3h dvfb,-wrt897bgty (n6 p;i3n 9;gt dffwmersaulk/1d.onmeg t)s:9 bxvt without having any initial rotation when she ./x :vgotse 19k)dmbnleaves the board?
参考答案:
In order to do a somersault, the
diver needs some initial angular momentum when she leaves the diving board,
because angular momentum will be conserved during the free-fall motion of the
dive.She cannot exert a torque on
herself in isolation, and so if there is no angular momentum initially, there
will be no rotation during the rest of the dive.
Post time 2025-2-18 20:00:22
