题目内容
如图所示,质量为m的木块在F的作用下,在质量为M的长木板上向右滑行,长木板与地面间动摩擦因数为μ1,木块与长木板间动摩擦因数为μ2,若长木板仍处于静止状态,则长木板受地面摩擦力大小一定为 ( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250005382372114.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250005382372114.jpg)
A.μ2mg | B.F | C.μ1(m1+m2)g | D.μ2mg+μ1mg |
A
试题分析:木块和木板之间发生相对滑动因此木板M受到木块m的摩擦力为滑动摩擦力大小为
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000538253534.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000538253534.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000538253534.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目