物体重心存在性的探究
Inquiry into the Existence of Objects' Center of Gravity
邵希吉 1艾谦2
作者信息
- 1. 韶关学院 智能工程学院,广东 韶关 512005
- 2. 南方科技大学 材料科学与工程系,广东 深圳 518055
- 折叠
摘要
人们在不同的教育阶段对重心的了解不同,这主要是由于不同的阶段物理教学给出重心的定义略有不同.为了更好地理解物体的重心情况,运用经典力学推导出了更为严谨的重心定义;并且证明了地表附近小尺度物体存在重心且与质心重合;也证明了大尺寸的物体的质心并不是其重心;而更大尺寸且非高度对称的物体只存在"重线",不存在重心.
Abstract
People have different understandings of the center of gravity at different stages of education,mainly due to the different definitions is slightly different in different stages of physics teaching.In order to clarify the the center of gravity of objects more accurately,classical mechanics was used to provide a more rigorous definition of the center of gravity.It is also proved that small-scale objects near the earth's surface have a center of gravity that coincides with their center of mass,and the center of gravity of large-scale objects was not necessarily at their center of mass.Moreover,for even larger and non-highly symmetrical objects,only a"line of gravity"exists and there was no center of gravity.
关键词
经典力学/质心/重心Key words
classical mechanics/center of mass/center of gravity引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据