摘要
指出二静电体系的相互作用力的普遍表达式F=-ΔWt=-ΔWi[1]并不恰当.正确的表达式应当是Fj=- Wt qj=- Wi qj[2,3],其中Fj是沿广义坐标qj方向的广义力,Wt是静电场总能量,Wi是二静电体系的相互作用能,qj为表征二静电体系相对位移的某一广义坐标.
It is pointed out that the general formula F=-ΔW t =-ΔW i are improper. The correct formula are F j =-W t q j =-W i q j , where q j is generalized force which is pointing along the direction of generalized coordinate q j ;W t is the total energy or electrostatic field;W i is the interaction energy of two electrostatic systems;q j is a generalized coordinate which characterize the relative displacement of two electrostatic systems.
出处
《大学物理》
北大核心
2003年第10期20-21,F003,共3页
College Physics
关键词
静电场总能量
相互作用能
相互作用力
total energy of electrostatic field
interaction energy
interaction force
