A Complete Collection of 100000 Whys
Fav十万个为什么
为什么重力会拉东西？
1、重力是地球等天体对物体的吸引力，源于物体内部的质子和中子产生的电磁力。
2、根据牛顿的万有引力定律，任何两个物体之间都存在相互吸引的力，力的大小与物体的质量成正比，与距离的平方成反比。
3、重力使物体向地面落下，是因为地球的质量非常大，产生的引力足以克服其他力，使物体加速向地面运动。
4、重力不仅影响固体，也影响液体和气体，例如水往低处流、大气层围绕地球旋转都是重力作用的结果。
5、重力是宇宙中普遍存在的力，它使行星围绕恒星旋转、星系形成和宇宙结构演化都离不开重力。
总之，重力是物体之间因质量而产生的相互吸引力，是地球表面物体下落和天体运动的基本原因，对自然现象和宇宙规律有着深远的影响。
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