gc textbook chapter 8 Rotational Motion (id: a78c718ff)

admin

本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

[问答题]
Mammals that depend on being able to run fami97qsi(b)pzrt 5j5 j st v ,rwt q98)2f)nllz mghave slender lower legs with flesh and muscle concentrated high, close to the body (Fig. 8–34). On the basis n,lq 8zgvt2lrmw))9f 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

微信扫一扫，阅读更方便