题目内容
光滑水平面上有
、
两个木块,中间拴接一个轻弹簧,弹簧处于自然长度,系统处于静止状态;现对木块
施加
的水平向右的推力,同时对木块
施加
的水平向右的拉力,使木块
、
一起向右运动;已知木块
、
的质量分别为
、
。则
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250011361022841.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135915283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135930299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135915283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135962596.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135930299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135993589.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135915283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135930299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135915283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135930299.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001136071630.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001136086627.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250011361022841.jpg)
A.木块![]() ![]() |
B.木块![]() ![]() |
C.木块![]() ![]() |
D.木块![]() ![]() |
C
试题分析:假设弹簧被拉长,且弹力为F,根据牛顿定律 ,则对a
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001136227664.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001136242654.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135915283.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001135930299.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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