本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 IB物理学
[问答题]
Why do you tend to lean backward when carrying a h . bs,m 0-b8umyacd.lpeavy load in your trewo/ r 3a;r1arms?
参考答案:
In order to maintain balance, your CM must be
located directly above your feet. If you
have a heavy load in your arms, your CM will be out in front of your body and
not above your feet. So you lean
backwards to get your CM directly above your feet. Otherwise, you would fall over forwards.
本题详细解析:
暂无
| 
