题目内容
如图为一质量为m的卫星绕地球运行的椭圆轨道,其中A为近地点,距离地心为R1;B为远地点,距离地心为R2。若已知卫星在近地点的速度为V1,远地点的速度为V2,则:
(1)求卫星从A运动到B万有引力做的功
(2)卫星在A、B处的加速度之比
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201044716.gif)
(1)求卫星从A运动到B万有引力做的功
(2)卫星在A、B处的加速度之比
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201044716.gif)
(1)
-
(2)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201153303.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201060238.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201075187.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201153303.gif)
(1)卫星从A到B的过程用动能定理:
-
(6分)
(2)在A 处:
(3分)同理:
(2分)
所以:
(2分)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201060238.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201075187.gif)
(2)在A 处:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201294314.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201309317.gif)
所以:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824115201153303.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目