题目内容
质量为M的斜面体A放在粗糙水平面上,用轻绳拴住质量为m的小球B置于斜面上,整个系统处于静止状态,已知斜面倾角及轻绳与竖直方向夹角均为θ=30°.不计小球与斜面间的摩擦,则
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241213197472440.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241213197635388.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241213197943452.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241213197472440.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241213197635388.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241213197943452.jpg)
A.轻绳对小球的作用力大小为![]() ![]() ![]() ![]() ![]() | B.斜面对小球的作用力大小为![]() |
C.斜面体对水平面的压力大小为(M+m)g | |
D.斜面体与水平面间的摩擦力大小为![]() |
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略
![](http://thumb2018.1010pic.com/images/loading.gif)
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