题目内容
设地面附近重力加速度为g0,地球半径为R0,人造地球卫星圆形轨道半径为R.那么,以下说法不正确的是( )
A.卫星在轨道上向心加速度大小为g0R02/R2 |
B.卫星运行的速度大小为![]() |
C.卫星运行的角速度大小为![]() |
D.卫星运行的周期为2π![]() |
C
试题分析:根据黄金替代公式可得:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193359438728.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241934000781000.png)
根据
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193401029760.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241934016691066.png)
根据公式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193402152852.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193402745775.png)
根据公式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193403681967.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193404508904.png)
让选错误的,故选C
点评:本题的关键是掌握黄金替代公式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824193359438728.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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