ON PERIODIC MOTION OF SIMPLE PENDULUM: "AND YET, IT MOVES. INTERNATIONAL JOURNAL OF PHYSICS RESEARCH AND DEVELOPMENT (IJPRD), [S. l.], v. 2, n. 1, p. 08–18, 2019. Disponível em: https://lib-index.com/index.php/IJPRD/article/view/IJPRD_01_01_002.. Acesso em: 12 feb. 2026.