Development of Computer-Based Experiment in Physics for Free Falling Objects


The purpose of this research was to create and to develop the computer-based experimental set for physics labs. With the developed experimental set, learners will have an easier way to study the motion of free falling object without air resistance and easier way to measure the acceleration due to gravity which makes learners get their Physics concept precisely and more quickly than ever. The computer-based experimental sets are consisted of Arduino board connected to a computer or notebook via a USB port, an infrared sensor circuit, an electromagnet relay circuit, a steel ball and voltage power supply. Arduino1.5.2, Processing 1.5.1 and Mathematica 9.0. were assigned to be software of the experimental set. Arduino1.5.2 controls the experimental performance while Processing 1.5.1 displays output for displacement vs. time in real time graphs and Mathematica 9.0 analyzes the results and simulates experiments. The acceleration of gravity from the experiment by the developed computer-based experimental set displays 9.780121 m/s2 that is ± 0.013076 % error when compared to the theoretical calculation. The computer-based experimental set was tested in Physics classes with Constructivism theory, for 196 upper secondary purposive samples, the satisfactory of the samples to their learning activity is at a high level and their pre–test and post-test scores are 45.79 and 70.29 % respectively.

Author Information
Panjit Musik, Faculty of Science and Technology Nakhon Si Thammarat Rajabhat University, Thailand

Paper Information
Conference: ECE2014
Stream: Educational research and development

This paper is part of the ECE2014 Conference Proceedings (View)
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Posted by James Alexander Gordon