题目内容
质量相同的两个小球,分别用长为l和2 l的细绳悬挂在天花板上,如图所示,分别拉起小球使线伸直呈水平状态,然后轻轻释放,当小球到达最低位置时
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250013571424356.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250013571424356.png)
A.两球运动的线速度相等 |
B.两球运动的角速度相等 |
C.两球运动的加速度相等 |
D.细绳对两球的拉力相等 |
CD
试题分析:当小球到达最低位置时,根据动能定理
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001357157797.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001357173595.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001357189849.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001357204729.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001357220611.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001357235750.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
题目内容
A.两球运动的线速度相等 |
B.两球运动的角速度相等 |
C.两球运动的加速度相等 |
D.细绳对两球的拉力相等 |