Permata A, Asrizal A, Amir H, Sari M. Design of a Gravity Acceleration Measurement System Using a Pendulum Oscillation Tool and Tracker Analysis. Department of Physics, Universitas Negeri Padang [Internet]. 2026 Mar. 31 [cited 2026 Apr. 19];4(1). Available from: https://jeap.ppj.unp.ac.id/index.php/jeap/article/view/162