论文标题
用各种大小的球测量摆运动的电阻系数
Measurement of resistance coefficients of pendulum motion with balls of various sizes
论文作者
论文摘要
为了获得摆的阻尼和电阻系数，我们构建了一个光仪系统，该光学系统包含光仪，用于在最低运动点下测量摆的速度。光子材料由光线师，激光，机械体和摆球组成。使用3D打印机生产各种尺寸的机械体和摆球。此外，我们使用Arduino在最低运动点以自动化速度的测量并提高精度。我们发现，电阻系数与球质量的大小成正比，与小雷诺数的阻力方程一致。
In order to obtain the damping and resistance coefficients of a pendulum, we constructed an optical system containing a photogate for measuring the speed of the pendulum at the lowest point of motion. The photogate consisted of a photoresistor, a laser, a mechanical body, and a pendulum ball. A 3D printer was used to produce the mechanical body and pendulum balls of various sizes. Furthermore, we used Arduino to automate measurement of the speed at the lowest point of motion and increase the precision. We found that the resistance coefficient was proportional to the size of the balls, regardless of the ball mass, in agreement with the drag equation for a small Reynolds number.
