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What is viscocity ?what is the dimensional formula of coefficient of viscocity?
what is viscocity ?what is the dimensional formula of coefficient of viscocity?
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Narayan singh![best-answer]()
Coefficient of viscosity is defined as tangential force required to maintain a unit velocity gradient between two parallel layers of liquid of unit area. Mathematically, Coefficient of viscosity (η)= Fr/Av where F = tangential force, r = distance between the layers , v = velocity. Dimensional Formula of Force = M1L1T-2 Dimensional Formula of Area= M0L2T0 Dimensional Formula of distance= M0L1T0 Dimensional Formula of velocity= M0L1T-1 Putting these values in above equation we get, [η]= [M1L1T-2][M0L1T0] / [M0L2T0] [M0L1T-1] = [M1L-1T-1] Dimensional Formula of Coefficient of viscosity (η)=[M1L-1T-1] SI unit of Coefficient of viscosity (η) is Pascal-second
sir tangential force kya hota h
a force which acts on a moving body in the direction of a tangent to the path of the body, its effect being to increase or diminish the velocity; - distinguished from a normal force, which acts at right angles to the tangent and changes the direction of the motion without changing the velocity.