力的时间分量  

The component of force in the direction of the time-axis

作　　者：李清玉[1] 吴文良[2] 李永铸[1] 

机构地区：[1]西南林学院基础部,云南昆明650224 [2]昭通师范高等专科学校学报编辑部,云南昭通657000

出　　处：《云南师范大学学报（自然科学版）》2003年第2期35-37,共3页Journal of Yunnan Normal University:Natural Sciences Edition

摘　　要：用狭义相对论分析变质量系统的受力情况 ;在狭义相对论中 ,力有三个空间分量和一个时间分量 ,当物体质量发生变化时 。The forces on the variable mass systems are analysed with special theory of relativity. On special theory of relativity, there are three components in the direction of the space-axes and one component in the direction of the time-axis in a force. When the mass of a body is changed, it would be acted on a force which is in the direction of the time-axis.

关 键 词：力 时间分量 狭义相对论 变质量系统 空间分量 普通物理教学 力学相对性原理 四维力 

分 类 号：O313.6[理学—一般力学与力学基础] O412.1[理学—力学]