In gases, the viscosity coefficient increases with an increase in the temperature. The coefficient of viscosity of the liquid at a temperature (T℃) is _ Mmįor the terminal velocity of the spherical ball There are two types of coefficient of viscosity.ĭynamic Viscosity: Dynamic viscosity(η) normally called viscosity is the ratio between the shearing stress (F/A) to the velocity gradient \ = ……. The quantitative value of the viscosity i.e degree to which a fluid resists flowing under an applied force is called the coefficient of viscosity. This is because it has greater flow resistance, more viscosity, and is thicker in nature. On the other hand, it may take a little longer to run honey through a funnel. Water flows very fast through a pipe, as it has very little flow resistance or very little viscosity. A fluid with low viscosity flows easily because when it is in motion, its molecular structure results in very little friction. A fluid with large viscosity resists motion because it gives it a lot of internal friction due to its molecular structure. It defines the friction within a moving fluid. The viscosity is a measure of the resistance of a fluid to flow.
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