题目内容
2013年我国相继完成“神十”与“天宫”对接、“嫦娥”携“玉兔”落月两大航天工程。某航天爱好者提出“玉兔”回家的设想:如图,将携带“玉兔”的返回系统由月球表面发射到
高度的轨道上,与在该轨道绕月球做圆周运动的飞船对接,然后由飞船送“玉兔”返回地球。设“玉兔”质量为
,月球半径为
,月面的重力加速度为
。以月面为零势能面,“玉兔”在
高度的引力势能可表示为
,其中
为引力常量,
为月球质量。若忽略月球的自转,从开始发射到对接完成需要对“玉兔”做的功为
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049084182493.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049084504659.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908325311.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908325339.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908340301.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908356346.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908325311.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049083871147.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908403312.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908403399.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049084182493.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049084504659.png)
A.![]() | B.![]() | C.![]() | D.![]() |
D
试题分析:在月球表面上,
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908606900.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049086211164.png)
在高h处玉兔的动能
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049086371652.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004908652529.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250049085901125.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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