Comprehensive experiment of pendulum dynamics based on real-time data acquisition
Based on the simple pendulum experiment,a comprehensive experiment of pendulum movement was designed with rotation sensor.With the measurements of time dependent swing angle and angular velocity,real time movement of small angle swing was studied for the verification of simple harmonic movement,the local gravitational acceleration was obtained as 9.77 m/s2 with little percent-age error of 0.22%.Meanwhile,underdamped movement of big angle swing was also studied,the air damping coefficient was obtained as 0.00224 s-1.With the measurement of instancy-quantity,some knowledge points of dynamics were investigated by experiment scheme presented in this paper,which promote the further understanding of theoretical knowledge for students and stimulate the research en-thusiasm of variation law for physical quantities of moving objects.
NETL
NSTL
万方数据
