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Gaokao Physics Practice Question

利用三颗位置适当的地球同步卫星, 可使地球赤道上任意两点之间 保持无线电通讯, 目前地球同步卫星的轨道半径为地球半径的 6.6 倍, 假设 地球的自转周期变小, 若仍仅用三颗同步卫星来实现上述目的, 则地球自转 周期的最小值约为

  1. A.$1 \mathrm{~h}$
  2. B.$4 \mathrm{~h}$
  3. C.$8 \mathrm{~h}$
  4. D.$16 \mathrm{~h}$

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