2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/84968We relate Newton's Second Law with the Second Law of Thermodynamics through the analysis of a simple model introducing a dynamic pressure concept. From this analyses we can clarify some conceptual problems resulting from several concepts of heat and work on the First Law of Thermodynamics.18 pages, 4 figures (in portuguese language)General PhysicsAnalise dinamica da tendencia para o equilibrio num modelo simples: a Segunda Lei de Newton e a Segunda Lei da Termodinamicatext