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An Introduction to Statics

Gravity Between Masses and Distance

Description

Newton’s law of gravitational attraction describes how gravity acts between two objects. Sir Isaac Newton built this law from empirical evidence and inductive reasoning. He published it in Philosophiae Naturalis Principia Mathematica, or the Principia, on July 5, 1687.

The law says that the gravi...

Transcript

牛顿万有引力定律指出,当两个质量分别为 m1m2 的质点相距为 r 时,它们之间会以大小相等、方向相反的力相互吸引。

吸引力沿着连接两个质点的直线作用,其大小与它们质量的乘积成正比,与它们之间距离的平方成反比,其中 G 是被称为引力常数的普适常数。

地球对物体施加的引力称为物体的重量。它等于物体的质量与重力加速度的乘积,单位为牛顿。

重力分离器、落锤和重力输送机是一些基于牛顿万有引力定律工作的机械工具。

考虑落锤锻造过程。在此过程中,具有一定重量的锤头被提升到特定高度,然后使其自由下落。

由于地球具有强大的引力,锤...

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