描述简谐运动轨迹实验的改进方案

Improvement on the experiment of describingthe motion track of simple harmonic

针对人教版选修教材中简谐运动实验中的不足,对该实验装置进行了改进.改进后的实验装置在弹簧振子两端加2个滑环,并用铁丝穿过滑环,以防止弹簧振子在振动过程中旋转,且可以减小摩擦;同时又用磁性笔代替绘图笔,由慢速电机(旋转可调)牵引磁性黑板,以实现描述弹簧振子的运动轨迹的目的.

Aiming at the deficiency of simple harmonic motion in materials, author puts forward some measures to improve the experiment of simple harmonic motion. The improved device uses two slip rings on the ends of spring vibrator, and two slip rings are drilled through by wire, in order to avoid spring vibrator circumvolution during the vibration process and decrease friction. Then the author uses magnetic pen instead of drawing pen, and uses electromotor to slowly pull the magnetic blackboard, in order to distinctly describe motion track.