การใช้เทคนิคการวิเคราะห์วิดีโออัตราเร็วสูงศึกษาการเคลื่อนที่ของ เพนดูลัมวงแหวนเพื่อพัฒนาแนวคิดวิทยาศาสตร์ของนักศึกษาครูฟิสิกส์

Abstract

This reseach aimed 1) to study of the full and partial ring pendulum motion by using the high-speed video analysis technique 2) to develop the activity-based tutorials (ABT) of motion on the ring pendulum using the high-speed video analysis technique and, 3) for developing Physics teacher students’ scientific conceptions and normalized gain values by usingthe activity-based tutorials on the ring pendulum motion. In this research was investigated and analyzed by using high-speed video at a rate of 120 frames s-1 and Tracker Video Analysis (Tracker) software. It was found that, 1) the value of g was able to obtain with a value of 9.46 ms-2 and about 3.32% deviation from the real value. 2) the comparison in two ways of the full ring’s moment of inertia, which were and acquiring from Tracker video analysis and direct measuring of ring’s radii, respectively. As a result, the average percentage difference were approximately 0.29%. 3) The oscillating periods depending on the ring’s radius of curvatures, but did not depend on the length of the circumference. 4) Then, the experiments were used to be an activity-based tutorials. Forty students were divided into 2 groups of experimental and control groups using purposive sampling. The results showed that, the higher normalized gain values of the experimental group than those of the control group.