弹簧振子振动图像演示装置  

Visual demonstration instrument of spring vibration

作　　者：张晓红 ZHANG Xiao-hong(No. 3 Middle School of Qingyang, Qingyang 745000, Chin)

机构地区：[1]庆阳第三中学,甘肃庆阳745000

出　　处：《物理实验》2017年第8期58-59,共2页Physics Experimentation

摘　　要：为了清晰地展示弹簧振子的振动图像,自制了弹簧振子振动演示装置。该装置利用弹簧和小球作双弹簧振子,在小球上连接输液管,并用注射泵控制输液管中的液体流速,当弹簧振子振动时可以留下运动轨迹;实验采用有机玻璃板或白纸呈现运动轨迹,利用电动机控制并保证有机玻璃板或白纸做匀速运动。通过以上改进可获得弹簧振子振动时的位移随时间变化的函数图线.To clearly show the vibration image of spring oscillator, a visual demonstration instru- ment was designed. The device used spring and balls to form a double spring oscillator, connected an infusion tube to the ball and controlled the liquid flow rate in the infusion tube with an injection pump. When the spring oscillator vibrated, its movement traek was observed. A piece of plexiglass plate or paper, controlled by motor to do uniform motion, could be adopted to show the movement track. Using this instrument, the displacement-time curve was obtained when the spring oscillator moved away from the equilibrium position.

关 键 词：简谐运动 弹簧振子 振动图像 正弦曲线 

分 类 号：G633.7[文化科学—教育学]