题目内容
如图所示,两个质量为m的物体A和B紧靠在一起放在光滑水平桌面上,如果它们分别受到水平推力F1和F2,且F1>F2,则AB的加速度与AB间的作用力的大小分别为:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250003217371778.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250003217371778.png)
A.(F1+F2)/m | B.(F1-F2)/m |
C.(F1+F2)/2 | D.(F1-F2)/2 |
C
试题分析:AB作为一个整体,水平方向受到合力为
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000321753702.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000321784765.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000321800312.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000321815892.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000321831668.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.(F1+F2)/m | B.(F1-F2)/m |
C.(F1+F2)/2 | D.(F1-F2)/2 |