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範例:萬有引力與行星圓周運動

一行星之旁有一質量為m的小衛星繞其轉動,軌道半徑為r,週期為T。試求(1)此行星的質量(2)衛星向行星的加速度。(3)衛星所受行星的引力。(4)若行星的半徑為衛星軌道的十分之一,則此行星表面的g值若干?
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