复合场中的滚轮线

带电质点在正交的匀强电场(重力场)和匀强磁场中运动,轨迹为滚轮线.处理滚轮线问题的关键是构造匀速直线运动以平衡电场力(重力),从而将带电质点的运动分解为匀速直线运动和匀速圆周运动,简化问题的处理过程.

Roller Line in Compound Field

The path of a charged particle moving in an orthogonal uniform electric field(gravitational field)and uniform magnetic field is a roller line.The key idea to deal with the roller line problem is to construct a uniform linear motion to balance the electric field force(gravity),so that the motion of the charged particle can be decomposed into uniform linear motion and uniform circular motion,then the processing process of the problem has been significantly simplified.