题目内容
(12分)高空遥感探测卫星在距地球表面高为2R处绕地球转动。人造卫星质量为m,地球半径为R,地球表面重力加速度为g,
试求:(1)人造卫星的运行速度大小v;
(2)人造卫星绕地球转动的周期T;
(3)人造卫星的向心加速度an。
试求:(1)人造卫星的运行速度大小v;
(2)人造卫星绕地球转动的周期T;
(3)人造卫星的向心加速度an。
(1)
(2)
(3)![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000246637538.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000246590629.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000246621826.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000246637538.png)
试题分析: (1) 地球表面上的物体受到的万有引力近似等于物体的重力,
即
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000246653783.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825000246684821.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250002466991256.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250002467151061.png)
(2)周期:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250002467311347.png)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250002467621932.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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