题目内容
“天宫一号”和“神舟十号”交会对接成功,标志着我国在对接技术上迈出了重要一步,用M代表“神舟十号”,N代表“天宫一号”,它们对接前做圆周运动的情形如图所示,则( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250024139202560.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250024139202560.png)
A.M的运行速度小于N的运行速度 |
B.M的向心加速度大于N的向心加速度 |
C.M的运行周期大于N的运行周期 |
D.M适度加速可与N对接 |
BD
试题分析:根据万有引力定律和牛顿第二定律有:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002413936742.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002413936552.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002413951763.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002413998662.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002414014871.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002414029629.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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