Design And Build A Practicum Equipment For The Law Of Conservation Of Mechanical Energy Of Rolling Objects

¹ Universitas Negeri Padang, Department of Physics, Padang, Indonesia
² IAIN Kerinci, Department of Tadris, Kerinci, Indonesia

^* Corresponding author: yulkifliamir@fmipa.unp.ac.id

Abstract

Using photo gate sensor technology and digital displays, the research team created a legal practicum for energy conservation. This study aims to replace manual practicum equipment that is prone to measurement errors during practicum. This practicum equipment is used to prove the law of conservation of mechanical energy in rolling objects. Practicum equipment is developed using a development research process that starts with identifying needs and continues through design, manufacturing, and testing. At the design stage, validation of design results is carried out, while at the manufacturing and testing stages, design specifications and performance (measurement of accuracy and precision) are carried out. Based on the results of design validation, a value of 0.85 with a valid category was obtained, while accuracy was 90.7%, with an average accuracy of 97.46%, and a relative error of 8.33%. The thoroughness of the practicum equipment for the law of conservation of mechanical energy of rolling objects is quite good. We are currently developing several pieces of practicum equipment with IoT-assisted smartphone displays.