题目内容
两颗人造地球卫星,质量之比m1:m2=1:2,轨道半径之比R1:R2=3:1,下面有关数据之比正确的是
A.周期之比T1:T2=3:1 |
B.线速度之比v1:v2=1:![]() |
C.向心力之比为F1:F2=1:9 |
D.向心加速度之比a1:a2=1:9 |
BD
试题分析:根据万有引力提供向心力
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242048032931310.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824204804338628.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824204805493642.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824204806148877.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824204807458432.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824204802529337.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824204809299747.png)
点评:本题难度较小,熟练掌握万有引力提供向心力中线速度、角速度、周期公式
![](http://thumb2018.1010pic.com/images/loading.gif)
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