题目内容
如图甲、乙所示,在水平面上运动的小车内,有一质量为M的物体与两根劲度系数分别为k1、k2的轻弹簧连接。开始时两弹簧均未发生形变,不计物体与小车间的摩擦。当小车以加速度a向右做匀加速直线运动时,甲、乙两图中物体相对于小车的位移量分别为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414405407310846.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414405407310846.jpg)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
A
静止时两弹簧均处于原厂位置,当以加速度a向右做匀加速直线运动时,对于甲图
,对于乙图,两弹簧的弹力相等,设为F,则2F=Ma,![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241440563351177.png)
,A对;
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241440562571161.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241440563351177.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824144054432944.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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