【摘要】 在气垫导轨上探究弹簧振子的阻尼振动是普通物理实验中的重要实验,从实验上和理论上探究了挡光片宽度和振幅对半衰期测量的影响.研究结果表明实验测得的半衰期随着挡光片宽度的增加而线性增大,随着初始振幅的增大而减小,而且理论和实验符合的很好.该研究在指导学生正确地选取实验的初始状态,并正确地测量半衰期方面有一定的参考价值.更多还原

【Abstract】 The damping vibration experiment of spring on air track was one of the most important experiments in college physics.The influence of the light barrier width and amplitude on the half-life period was studied theoretically and experimentally.The results showed that the half-life period increased linearly with the increase of the light barrier width and decreased with the increase of the amplitude.Agreement between theory and experiment was achieved.The research had certain significance in guiding students to choose the initial state of the experiment correctly and measure the halflife period accurately.更多还原