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近地卫星和同步卫星

> （12分）火箭发射卫星的开始阶段是竖直升空，设向上的加速度为a=5m/s 2，卫星中用弹簧秤悬挂一个质量m=9kg的物体。当卫星升空到某高处时，弹簧秤的示数为85N，那么此时卫星距地面的高度是多少千米（地球半径取R=6400km，g=10m/s 2）？

问题：

发布时间：2020-03-13

（12分）火箭发射卫星的开始阶段是竖直升空，设向上的加速度为a=5m/s ²，卫星中用弹簧秤悬挂一个质量m=9kg的物体。当卫星升空到某高处时，弹簧秤的示数为85N，那么此时卫星距地面的高度是多少千米（地球半径取R=6400km，g=10m/s ²）？

参考答案：

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