[问答题]
Can the diver of Fig. 8–29 do a somer s;cgbh 52mpf jsj57+ fvmc82ysault without having any initial rotationmgzzbgc)/ 4, oe ckk:r*ru.3ngh3( c x when she leaves the3r(c3*z4n,ukg ccok h/xe : g r).mgzb 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
