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1st Int. Transborder Conf. of the Timor Island: Timor %u2013 Science without borderDili, 7-8 May 2025183Buoyancy and Weight Relationships in Dynamic Floating ObjectsFakhruddin*, Nikodemus U.J. Hauwali and Gloriana SarmentoProgram Studi Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan Universitas Nusa Cendana, Indonesia*Corresponding author: Fakhruddin@staf.undana.ac.idAbstractObjects that float while in motion within a liquid medium can be understood using principles similar to those that describe sinking objects. This research investigates the relationship between three main physical quantities: the weight of an object in air (denoted as w%u20d7 b ), the apparent weight of the object when submerged in a liquid ( w%u20d7 b ) , and the buoyant or upward lift force acting on the object ( F%u20d7 A ) The study uses a qualitative literature research method to review existing theories and experimental findings on buoyancy and dynamic motion in fluids. When an object floats in a moving state, it undergoes deceleration as it rises toward the liquid surface. This deceleration suggests the presence of opposing forces that must be considered in equilibrium analysis. Through this framework, the resulting relationship F%u20d7 A = w%u20d7 b + w%u20d7 %u2032b is derived. This equation implies that the total buoyant force experienced by the object is the sum of its weight in air and its apparent weight in the fluid. This finding is significant in physics education and fluid mechanics as it provides a clearer understanding of how motion affects buoyancy and how dynamic conditions alter the equilibrium of floating bodies. This analysis could be useful for further experimental design and in enhancing conceptual understanding of Archimedes%u2019 principle in static fluid environments.Keywords: object weight, Archimede%u2019s principle, buoyancy, fluid dynamics, Physics Education.