题目内容
如图所示,一木块位于光滑的水平桌面上,木块上固定一支架,木块与支架的总质量为M.一摆球挂于支架上,摆球的质量为m,
,摆线的质量不计.初始时,整个装置处于静止状态,一质量为m的子弹以大小为v0、方向垂直于纸面向里的速度射人摆球并立即停留在球内.摆球和子弹便一起开始运动.已知摆线最大的偏转角小于90°.在小球往返 运动过程中摆线始终是拉直的,木块未发生转动.
求:(1)摆球上升的最大高度;
(2)摆球在最低处时速度的大小.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241324361368154.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824132436089691.jpg)
求:(1)摆球上升的最大高度;
(2)摆球在最低处时速度的大小.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241324361368154.png)
(1)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241324361983734.png)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241324362618704.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082413243630738294.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082413243637043743.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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