题目内容
三个人造地球卫星A、B、C,在地球的大气层外沿如图所示的方向做匀速圆周运动,已知
则关于三个卫星的说法中错误的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241351306764495.png)
A. 线速度大小的关系是![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130723568.png)
B. 向心力大小的关系是
C. 周期关系是![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130817603.png)
D. 轨道半径和周期的关系是![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241351308481011.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130614622.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241351306764495.png)
A. 线速度大小的关系是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130723568.png)
B. 向心力大小的关系是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130770609.png)
C. 周期关系是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130817603.png)
D. 轨道半径和周期的关系是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241351308481011.png)
B
由向心力公式
,B的向心力最小,B错;由周期公式
可知bc周期相同,a周期最小,C对;由线速度公式
可知,bc线速度相同,a的线速度最大,A对;由开普勒第三定律可知D对;
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130895779.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135130973952.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135131051743.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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