The coefficient of viscosity depends on the following mentioned factors. Dimensional formula for the coefficient of viscosity is.In the SI system the unit of coefficient of viscosity N s m -2 or deca-poise.In the CGS system, the unit of coefficient of viscosity is dynes s cm -2 or Poise.Viscosity Co-efficient UnitsĬo-efficient of Viscosity is measured in various units as, Thus, the coefficient of viscosity of a liquid is defined as the viscous drag or force acting per unit area of the layer having a unit velocity gradient perpendicular to the direction of the flow of the liquid. If A = 1 m 2 and dv/dx = 1 s -1 then the above expression becomes: Here, η is called the coefficient of viscosity. Lets remove the proportionality sign by introducing a proportionality constant η. Directly proportional to velocity gradient (dv/dx) between the layers F ∝ (dv/dx).Directly proportional to area (A) of the layer F ∝ A.Learn more about, Dynamic Viscosity and Kinematic Viscosity Co-efficient of ViscosityĪccording to Newton’s law of viscosity, the viscous drag, between these layers is, Kinematic Viscosity = Absolute Viscosity/Density of the Liquid The Kinematic Viscosity Formula is given as The Formula for Dynamic Viscosity is given asĭynamic Viscosity = Shearing Stress/Shearing Rate Change We call this measure of fluid viscosity kinematic viscosity. And the other way is to measure the resistive flow of a fluid under the weight of gravity. One way is to measure the fluid’s resistance to flow when an external force is applied. We can measure Viscosity by two methods and the viscosity measured by these two methods is called the types of viscosity. ![]() ![]() ![]() ∆ρ is Density difference between fluid and sphere tested.Role of Mahatma Gandhi in Freedom Struggle.
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