题目内容
两颗人造地球卫星,都在圆形轨道上运行,质量之比为mA∶mB=1∶2,轨道半径之比rA∶rB=1:2,则它们的
(1).线速度之比vA∶vB = ;
(2).角速度之比
A:
B = ;
(3).周期之比TA∶TB = ;
(4).向心加速度之比aA∶aB = 。
(1).线速度之比vA∶vB = ;
(2).角速度之比
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171012248308.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171012248308.png)
(3).周期之比TA∶TB = ;
(4).向心加速度之比aA∶aB = 。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171012701388.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171013122409.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171013496418.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171013840310.png)
试题分析:(1)根据公式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171014276937.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171014729743.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171015134391.png)
(2)根据公式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171015322956.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171015696836.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171015961314.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171015961314.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171016850414.png)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171017131634.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171017318424.png)
(4)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171018067698.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824171018317311.png)
点评:做本题的关键是对各个公式正确掌握,
![](http://thumb2018.1010pic.com/images/loading.gif)
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