An investigation into the terminal velocity of steel ball bearings as they pass through glycerol.

... An investigation into the terminal velocity of steel ball bearings as they pass through glycerol Hypothesis According to stokes law, spheres falling through a fluid exhibit the following relationship. 4/3?r3 (?-?)g = 6?nrvt vt = 2r2 (?-?)g 9? where ? is viscosity, ? is fluid density, ? is sphere density and vt is terminal velocity Therefore Vt r2 Variables In this investigation there are many variables that will affect the terminal velocity of ball bearings as they pass through glycerol. These have been considered and the appropriate precautions taken so that their influence can be observed and analysed and the correct conclusions drawn. Viscosity - any object moving through a viscous fluid is acted on by friction due to the fluid. A higher viscosity will increase this friction that opposes its motion. In order to keep the viscosity of the glycerol constant in this investigation, the same glycerol of concentration 1moldm-3 will be used throughout the experiments. Sphere radius Temperature - An increase

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