Pengembangan Alat Praktikum Gerak Jatuh Bebas Menggunakan Sensor Phototransistor Untuk Pembelajaran Fisika Pada Materi Gerak Jatuh Bebas

Abstract

This study aims to produce free fall practicum tools by utilizing phototransistor sensors to record the travel time of objects that fall from the starting point to the end point. Dealing with free falling equipment (GJB), equipment in schools is generally still very simple that is using a stopwatch. This type of research is a research and development using 4-d model (define, design, develop and disseminate), which is limited to the stage of development to practicalization activities. Data were collected through validation and responses toward administered questionnaires. Data analysis were conducted by analyzing validation sheet and quantitative response questionnaire by finding percentage of each item on the validation sheet. Then the data validation results are analyzed by descriptive technique to describe the quality of the developed product. The result of calibration of free fall practicum by using phototransistor sensor at 40 cm, 50 cm, and 70 cm distance obtained the average travel time of each object is 0.28 s, 0.32 s, and 0.37 s. These results indicate that the practicum tool has been calibrated. Validation of practicum tool is 72,39% and validation of questionnaire response of practican is 75%, indicating tool categorized valid. Furthermore, this tool is tested in class X.MIA and XI.MIA MAN 3 Payakumbuh which consisted 23 students in the science laboratory of MAN 3 Payakumbuh with the questionnaire response practicality are 87.75% and 84.41% respectively which are categorized very practical.

Media Berbasis Arduino : Model Pengukuran Percepatan Gravitasi Bumi Dengan Prinsip Gerak Jatuh Bebas

“…Alat praktikum Gerak Jatuh Bebas telah banyak dikembangkan oleh beberapa peneliti. Pengembangan yang telah dilakukan meliputi set eksperimen gerak jatuh bebas dengan tampilan PC [5], penambahan phototransistor [6], serta stopwatch otomatis dalam perangkat praktikum Gerak Jatuh Bebas [7].…”

Development of a Free Fall Motion Experiment based on Smart Phone using Phyphox application

“…In other hand, some schools have a lack of equipment to conduct free-fall experiment, such as photogate and electronic timers due to their high cost. Alternatively, the use of stopwatch for time taken implies the random errors and cause results to be less accurate [7]. In order to solve these difficulties, therefore, this present study tries to develop an experimental kit in line with the development of current technology that is by using smartphones where the Phyphox application is used to record falling object more accurately.…”

Internet of Things (IoT) Based Free Fall Motion Instructions in Physics Subjects for Class X Students

“…To make it easier for teachers and students the gain knowledge of the system with free-fall motion props, the concept of automation on the tool will be applied [8]. Therefore the Internet of Things (IoT) will be combined with free-fall motion props to make it automated and join it to different objects through a network [9]. So in this study, we design and implement free-fall motion props by using IoT technology as an assessment medium that can be used by teachers and students [10].…”