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1989年高考物理第34小题是一道考察考生运用所学的物理知识分析、解决物理问题的能力的好题。原题如下:一个质量为 m,带有电量-q的小物体,可在水平轨道 ox 上运动,o 端有一与轨道垂直的墙,轨道处于匀强电场中,场强大小为 E,方向沿 ox 轴正方向,如图所示。小物体以初速度 V_o 从 X_o 加点沿 OX轨道运动,运动时受到大小不变的摩擦力f作用,且了(qE,设小物体与墙碰撞时不损失机械能,且电量保持不变,求它在停止运动前的总路
The 34th issue of the 1989 college entrance exam is a good question for examining candidates’ ability to analyze and solve physical problems using what they have learned. The original title is as follows: A mass of m, with electricity-q small objects, can move on the horizontal track ox, o end of a vertical wall orbit, orbit in a uniform electric field, the size of the field strength E, the direction along ox axis positive direction, as shown. Small objects at the initial velocity V_o from X_o point along the OX orbital movement, by the same size of the friction force f action, and (qE, set small objects collide with the wall without loss of mechanical energy, and power remain unchanged, ask it The total road before stopping exercise