题目内容
甲、乙两弹簧振子,振动图象如图所示,则可知
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241622459929526.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241622459929526.png)
A.两弹簧振子完全相同 |
B.两弹簧振子所受回复力最大值之比F甲∶F乙=2∶1 |
C.振子甲速度为零时,振子乙速度最大 |
D.振子的振动频率之比f甲∶f乙=1∶2 |
CD
试题分析:由振动图象读出两弹簧振子周期之比
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162246351590.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162246523784.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162246835465.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162247162478.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162246351590.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162247693611.png)
故选CD
点评: 不能把两弹簧振子错当成同一个弹簧振子,得到回复力最大值之比
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162248005593.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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