本题目来源于试卷: 2011 美国F=ma物理竞赛 F=ma physics competition，类别为 美国物理杯赛(Physics Bowl)
[单选题]
You have 5 different strings with weights tied at var (c l4qh((clm40 8e(lbi rdmtfiou h zqh*kl (3 icev(d:-bs point, all hanging from the ceiling, and reaching down to the floor. The string is re i(3kl *bhev-dz :cqh(leased at the top, allowing the weights to fall. Which one will create a regular, uniform beating sound as the weights hit the floor?
A.
B.
C.
D.
E.
参考答案: A
本题详细解析:
暂无
| 
