气垫导轨装置在碰撞实验中的改进

Improvement on the Air Tracker in an Impact Experiment

在气垫导轨上做碰撞实验,最大限度地减少了摩擦阻力的影响,但在实际的实验过程中,仍发现滑块的初速度不同时,粘滞性摩擦阻力对测量结果有不同程度的影响,为此在气垫导轨上增加了电子发射装置,较好地控制滑块的初速度和测量滑块的加速度,从而减小粘滞性摩擦阻力对测量结果的影响。

An impact experiment on air tracker can reduce the force of friction influence. But in actual experimental process, the viscous force of friction has influenc in the varying degree to the measurement result when the initial velocity of the slide block is different. In order to solve the problem, a thermionic emission device was added on the air tracker. This kind of equipment can controll the initial velocity of the slide block and survey the acceleration of the slide block. Thus it reduces the influence of the measurement result caused by the viscous force of friction.