Development of Gravity Acceleration Measurement Using Simple Harmonic Motion Pendulum Method Based on Digital Technology and Photogate Sensor

2nd International Conference on Mathematics, Science, Education and Technology

数学;自然科学;教育

Yulkifli^1 ; Afandi, Zurian^1 ; Yohandri^1

Physics Department, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Jl. Prof. Hamka, Padang, Sumatera Barat

25131, Indonesia^1

关键词: Accuracy and precision;    Calculation results;    Digital technologies;    Experiment system;    Gravity acceleration;    Measurement system;    Physics experiments;    Simple harmonic motion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/335/1/012064/pdf
DOI  :  10.1088/1757-899X/335/1/012064

来源: IOP

【 摘 要 】

Development of gravitation acceleration measurement using simple harmonic motion pendulum method, digital technology and photogate sensor has been done. Digital technology is more practical and optimizes the time of experimentation. The pendulum method is a method of calculating the acceleration of gravity using a solid ball that connected to a rope attached to a stative pole. The pendulum is swung at a small angle resulted a simple harmonic motion. The measurement system consists of a power supply, Photogate sensors, Arduino pro mini and seven segments. The Arduino pro mini receives digital data from the photogate sensor and processes the digital data into the timing data of the pendulum oscillation. The calculation result of the pendulum oscillation time is displayed on seven segments. Based on measured data, the accuracy and precision of the experiment system are 98.76% and 99.81%, respectively. Based on experiment data, the system can be operated in physics experiment especially in determination of the gravity acceleration.