电偶极子在均匀电场中的运动特征研究  

STUDY OF MOTION CHARACTERISTICS OF ELECTRIC DIPOLE IN UNIFORM ELECTRIC FIELD

作　　者：张永梅[1] 

机构地区：[1]南京航空航天大学理学院,江苏南京211106

出　　处：《物理与工程》2012年第2期4-6,共3页Physics and Engineering

摘　　要：电偶极子在均匀电场中受到力矩的作用而发生转动,但由于惯性的存在,电偶极子不会立即静止在平衡位置,而是会在平衡位置附近振动.本文从动力学和能量特征两个方面证实,初始角度较小的情况下,电偶极子做简谐振动.Electric dipole in uniform electric field rotates because of electric torque.When the electric dipole reaches its balance position,it doesn＇t rest at the position as inertia exists,but vibrates around the balance position.In this paper,it is confirmed that the electric dipole exhibits simple harmonic motion under small angle initial condition from the view of dynamics and energy characteristics.

关 键 词：电偶极子 均匀电场 力矩 简谐振动 

分 类 号：O441[理学—电磁学]