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(1)首先,要弄清是一个怎样的复合场,是磁场与电场的复合,还是磁场与重力场的复合,或是磁场、电场、重力场的复合.其次,要正确地对带电粒子进行受力分析和运动过程分析.在进行受力分析时要注意洛伦兹力方向的判定方法——左手定则,在运动过程分析时,要特别注意洛伦兹力的特点——始终和运动方向垂直,不做功.最后,选择合适的动力学方程进行求解.
(1) First of all, it is necessary to find out what kind of complex field is the combination of magnetic field and electric field, or the combination of magnetic field and gravitational field, or the combination of magnetic field, electric field and gravitational field. Secondly, Force analysis and analysis of the movement process.When analyzing the force, we should pay attention to the determination method of the Lorentz force direction-the left-hand rule, pay special attention to the characteristics of the Lorentz force in the analysis of the movement process-always and exercise The direction of vertical, not doing work.Finally, choose the appropriate kinetic equation for solving.