This study aims to investigate the viscosity of several liquids through a simulated laboratory experiment using the falling ball method. Four samples—distilled water (aquadest), alcohol, oil, and a dishwashing solution (sunlight)—were analyzed to compare their flow resistance. The density of each liquid was first determined using a 25 mL pycnometer, yielding values of 0.98864 g/mL for aquadest, 0.88723 g/mL for alcohol, 0.89679 g/mL for oil, and 1.00877 g/mL for sunlight. A glass ball with a diameter of 1.5 cm and a mass of 5.37 g was then released into vertical tubes containing each fluid, and the falling time was recorded. Measurements were taken at temperatures ranging from 28 °C to 31 °C, with fall times varying from 0.28 s in aquadest to more than 14 s in the dishwashing solution. The results confirmed that viscosity is strongly influenced by fluid density and internal friction: aquadest and alcohol exhibited the lowest resistance to motion, while oil and sunlight showed significantly higher viscosities. These findings demonstrate the applicability of the falling ball method for determining fluid viscosity and provide insight into the role of temperature, density, and molecular interactions in controlling liquid flow behavior in both laboratory and industrial contexts. Keyword: Fluid viscosity; Falling ball method; Fluid density measurement; Temperature influence; Viscosity experiment simulation