Comparative of kinetic coefficient friction of material surfaces using manual method and video tracker application
D H Mufida1*, S Humairo1, D Amirudin1, R B Astro 1, Meyliana2 dan S Viridi3

1Program Studi Magister Pengajaran Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam Institut Teknologi Bandung, Jl. Ganesha no. 10 Bandung, Indonesia, 401322
2Program Studi Pendidikan IPA, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No.229, Bandung, Indonesia
3Laboratorium Fisika Nuklir, Kelompok Keilmuan Fisika Nuklir dan Biofisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Institut Teknologi Bandung, Jl. Ganesha no. 10 Bandung, Indonesia, 40132

Abstract

A system consisting of a block with surface type of wood and jubin was slide down on the incline track. Experiments had been done to determine kinetic frictional coefficient by manual method using stopwatch and technology by using video tracker application. The length of the track were varied by 5 cm, 15 cm, and 25 cm. To determine kinetic frictional coefficient manually, stopwatch had been used to calculate the travel time on each track length. Then video tracker application had been used to observe the block while sliding from the top of the incline and then recorded it in video. The results of kinetic coefficients of the block surface that almost had similar value and hard to obtain by manual method, it can be simplified obtained by using video tracker application. Because the results were more rigorous and had smaller relative error. However, using video tracker application required a good camera resolution and good skills to operate it. So with the manual method would also be more effective and efficient but with long path length and the plane was sloping.

Keywords: kinetics frictional coefficient, video tracker

Topic: 3. Physics Education