The image above represents viscosity.

To compute for viscosity, three essential parameters are needed and these parameters are **Force applied (F), Area (A)** and **Derivation Ratio of Velocity to Distance of Fluid Flow (dv/dy).**

The formula for calculating viscosity:

η = ^{F/A} / _{dv/dy}

Where:

η = Viscosity

F = Force Applied

A = Area

dv/dy = Derivation Ratio of Velocity to Distance of Fluid Flow

Let’s solve an example;

Find the viscosity when the force applied is 21, area is 14 and derivation ratio of velocity to distance of fluid flow is 19.

This implies that;

F = Force Applied = 21

A = Area = 14

dv/dy = Derivation Ratio of Velocity to Distance of Fluid Flow = 19

η = ^{F/A} / _{dv/dy}

η = ^{(21/14)} / _{(19)
}η = ^{(1.5)} / _{(19)
}η = 0.0789

Therefore, the **viscosity **is **0.0789 Pa s.**

**Calculating Force Applied when the Viscosity, the Area and the Derivation ratio of velocity to distance of fluid flow is Given.**

F = (η x dv/dy) A

Where;

F = Force Applied

η = Viscosity

A = Area

dv/dy = Derivation Ratio of Velocity to Distance of Fluid Flow

Let’s solve an example;

Find the force applied when the viscosity is 20, the area is 30 and the derivation is 8.

This implies that;

η = Viscosity = 20

A = Area = 30

dv/dy = Derivation Ratio of Velocity to Distance of Fluid Flow = 8

F = (η x dv/dy) A

F = (20 x 8) 30

F = (160) 30

F = 4800

Therefore, the **force applied **is **4800.**

Continue reading How to Calculate and Solve for Viscosity | Ceramics