题目内容
如图所示,A,B为两个大小可视为质点的小球,A的质量
,B的质量
,B球用长
的轻质细绳吊起,当细绳位于竖直位置,B球处于静止状态时,B球恰好与弧形轨道MN的末端接触但无作用力,已知弧形轨道的内表面光滑,且末端切线水平,现使A球从距轨道末端
的高处由静止释放,当A球运动到轨道末端时与B球发生完全弹性碰撞。若
取
,求:
小题1:A球刚要接触到B球时的速度大小;
小题2:两小球相碰撞过程中,B球对A球所做的功;
小题3:两个小球碰撞后各自开始运动的瞬间,B球对细绳的拉力大小。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241253041641963.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125303993526.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304008494.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304086408.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304118441.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304133197.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304149416.gif)
小题1:A球刚要接触到B球时的速度大小;
小题2:两小球相碰撞过程中,B球对A球所做的功;
小题3:两个小球碰撞后各自开始运动的瞬间,B球对细绳的拉力大小。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241253041641963.jpg)
小题1:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304180429.gif)
小题2:-1.15J
小题3:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304196470.gif)
(1)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304211375.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304227455.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304180429.gif)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304242615.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241253042741770.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304289849.gif)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304305392.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304320441.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304196470.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304211375.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304227455.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304180429.gif)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304242615.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241253042741770.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304289849.gif)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304305392.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304320441.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125304196470.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目