题目内容
(8分)2013年6月11日,“神舟十号”发射成功,两天后“神舟十号”与“天宫一号”成功对接,对接后组合体沿距地面高度为h的圆形轨道做圆周运动。已知地球半径为R,地球表面重力加速度为g,引力常量为G,求:
(1)地球质量M;
(2)“神舟十号”与“天宫一号”组合体的运行周期T
(1)地球质量M;
(2)“神舟十号”与“天宫一号”组合体的运行周期T
(1) M=
,(2) T=![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242227200071039.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824222719212562.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242227200071039.png)
试题分析:这是一道考查学生对应用万有引力定律计算天体质量等基本题型,建议学生解题时注意轨道半径
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824222720943512.png)
(1)根据地球表面万有引力与重力近似相等
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824222722301873.png)
解得:M=
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824222719212562.png)
(2)由万有引力提供向心力,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242227248431385.png)
T=
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408242227200071039.png)
评分标准:本题共8分,每式2分
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目