本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 通用国际物理
[问答题]
Mammals that depend on being ablvm0 v.0gqp0g ta (ehgstt j6..e to run fast have slender lower legs with flesh and muscle concentrated high, c tgsj..e(ah6 tlose to the body (Fig. 8–34). On the basis of rotational dynamics, explain why this distribution of mass is advantageous.
参考答案: The legs have a lower moment of inertia
when the leg mass is concentrated next to the body. That means the legs will require less torque
to have a given angular acceleration, or, alternatively, a higher angular
acceleration can be developed. Thus the
animal can run fast.
本题详细解析:
暂无
| 
