DIGITAL IMAGE ANALYSIS USING BURST SHOT TECHNIQUE OF ROLLING MOTION CASE STUDIES

• Main Author: Aulia Falamy, Ryna
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/50145
• Institution: Institut Teknologi Bandung

In this study a method was developed to analyze digital images taken with the burst shot technique to observe the rolling motion of an object on an inclined plane. The phenomenon observed in this experiment is the captured image sequence of a rolling object on an inclined plane for a certain time interval using the burst shot technique. The burst shot technique is a technique of taking a series of pictures almost continuously (very fast). The observed objects were a hollow ping-pong ball and a solid phosphorus ball rolled on an inclined plane with a variation of the inclination with the angle of 15 °, 30 °, 45 °, and 60 °, in which the moment of inertia constant from these experiments can then be determined. The results show that the ping pong ball produces poor data due to the small mass where a slip occurs. Experiments carried out using a phosphorous ball produced fairly good values at an angle of 30°, where the relative standard deviation values at an angle of 45° indicated a fairly good precision. Therefore, the next experiment used an angle in the range between 30° -45°, i.e. 38°. In this experiment, the standard deviation was 0.037, but the relative standard deviation was quite large, i.e., 10.24%. Experiments were then carried out using a hollow cylinder and a solid cylinder. However, the experiment using these two objects has produce appropriate moment of inertia constant compared to the theory. For the hollow cylinder, the standard deviation is 0.074-0.098, the relative standard deviation 17.719%, and the average error of the K value reaches 114%. Whereas in solid cylinder the standard deviation is 0.035-0.120, the relative standard deviation reaches 21.488%, and the average error of the K reaches 34.%. However, in this study a method has been developed for observing the rolling motion of an object on an inclined plane, which is capable of moving an object on an inclined plane for each unit of time using the image shot with the burst shot technique. In this study, the experimental data collection technique did not require the use of certain devices, but needed to consider to specific things such as the contrast of objects against the background. Besides that, the optimal object in the experiment with this technique is a spherical object.