引力常数
牛顿万有引力定律中的比例常数。两点质量“m”1和“m”2之间的引力“F”可以与距离“r”相关,它们之间:
的值为。该力是指向吸引质量的向量。重力场“g”(也称为矢量,通常称为重力加速度)是每单位质量的力(通过对质量“m” 1的力来测量)(在重力仪中):
“g”是所有质量(例如地球上的质量)作用的矢量和。
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