两个悬挂慢放电小球的“负反馈”运动(英文)

Reverse Feedback Motion of Two Suspended Balls Slowly Losing Charge

引进一个对于求解某些物理问题有用的实函Va（x）．作为应用实例，讨论了两个悬挂慢放电小球的运动，并用实函Va（x）给出了动力学方程的带有高精度的近似解．对于小球运动的一些有趣的性质进行了分析．

Introduced is a real function Va(x) which is useful to solve some physical problems. As an applied example, the movement of two suspended balls losing charge slowly is discussed, and the approximate solution (with high accuracy) for the dynamic equation is presented by using the function Va(x). Some interesting properties concerning the balls' movement are given,