gc textbook chapter 8 Rotational Motion (id: ec2d220d5)

[问答题]
Can the diver of Fig. 8–29 do a somersault without havicd:uqf/8mn; *f smmc/ ng a*h;- 6.g jfk;cvp lsijny initial rotation when she leaves the h if6j gv c*;;kjpl.-sboard?

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.

本题详细解析: 暂无