A. Pramuda, M. Mundilarto, H. Kuswanto, S. Hadiati
Many research proved that indigenous knowledge is closely related to the context of today's concept of science and the recent smartphone technology can be used to reveal it. The motivation of this research is to suggest alternative physics experiments that could be conducted by the teacher using relevant traditional technology and smartphone sensor. In order to find alternative experiments and to explore the physics concepts behind the use of paper projectile in real "Meriam Karbit" attractions, we used a modified Meriam Karbit into a miniature form and its projectile with two mass variations. Recorded videos of Meriam Karbit miniature explosion from smartphone camera were analysed using VidAnalysis applications. The study succeeded in revealed that the higher the mass ratio of the Meriam Karbit system to the mass of the projectile, the velocity ratio of the two systems was even higher, and vice versa. The mass difference between paper used with the mass of real Meriam Karbit made from very large wood is enormous, the paper gets a huge portion of the burst velocity of the explosion while the Meriam Karbit is apparently unmoved. This was a more rational explanation of the use of paper projectile and could be used to study the momentum conservation concepts. © Published under licence by IOP Publishing Ltd.
Physics Education Program, IKIP-PGRI Pontianak, INDONESIA Student Postgraduate Program, Universitas Negeri Yogyakarta, Indonesia; Physics Education Program, Universitas Negeri Yogyakarta, Indonesia
