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近地卫星和同步卫星

> 如图所示,a、b、c是地球大气层外圆形轨道上运行的三颗人造地球卫星,a、b质量相同,且小于c的质量,则（） A．b所需向心力最大 B．b、c周期相等,且小于a的周期 C．b、c向心加速度相等,且小于a的向心加速度 D．b、c的线速度大小相等,且小于a的线速度

问题：

发布时间：2020-03-13

如图所示,a、b、c是地球大气层外圆形轨道上运行的三颗人造地球卫星,a、b质量相同,且小于c的质量,则（）

A．b所需向心力最大

B．b、c周期相等,且小于a的周期

C．b、c向心加速度相等,且小于a的向心加速度

D．b、c的线速度大小相等,且小于a的线速度

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