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.**

**Calculating the Area when the Viscosity, the Force Applied and the Derivation Ratio of Velocity to Distance of Fluid Flow is Given.**

A = (η x dv/dy) F

Where;

A = Area

η = Viscosity

F = Force Applied

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

Let’s solve an example;

Find the area when the viscosity is 12, the force applied is 9 and the derivation is 10.

This implies that;

η = Viscosity = 12

F = Force Applied = 9

dv/dy = Derivation Ratio of Velocity to Distance of Fluid Flow = 10

A = (η x dv/dy) F

A = (12 x 10) 9

A = (120) 9

A = 1080

Therefore, the **area **is **1080.**

**Calculating the Derivation Ratio of Velocity to Distance of Fluid Flow when the Viscosity, the Force Applied and the Area is Given.**

dv/dy = ^{F/A} / _{η}

Where;

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

η = Viscosity

F = Force Applied

A = Area

Let’s solve an example;

Find the derivation when the viscosity is 40, the force applied is 10 and the area is 2.

This implies that;

η = Viscosity = 40

F = Force Applied = 10

A = Area = 2

dv/dy = ^{F/A} / _{η}

dv/dy = ^{10/2} / _{40}

dv/dy = ^{5} / _{40}

dv/dy = 0.125

Therefore, the **derivation **is **0.125.**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the viscosity.

To get the answer and workings of the viscosity using the **Nickzom Calculator – The Calculator Encyclopedia. **First, you need to obtain the app.

You can get this app via any of these means:

**Web** – https://www.nickzom.org/calculator-plus

To get access to the **professional **version via web, you need to **register** and **subscribe **for** NGN 1,500 **per** annum** to have utter access to all functionalities.

You can also try the **demo **version via https://www.nickzom.org/calculator

**Android (Paid)** – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator

**Android (Free)** – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator

**Apple (Paid)** – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8

Once, you have obtained the calculator encyclopedia app, proceed to the **Calculator Map, **then click on **Materials & Metallurgical**** **under **Engineering****.**

Now, Click on **Ceramics**** **under **Material & Metallurgical**

Now, Click on **Viscosity **under **Ceramics**

The screenshot below displays the page or activity to enter your values, to get the answer for the viscosity according to the respective parameters which are the **Force applied (F), Area (A)** and **Derivation Ratio of Velocity to Distance of Fluid Flow (dv/dy).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Force applied (F)** is **21**,** Area (A)** is **14 **and **Derivation Ratio of Velocity to Distance of Fluid Flow (dv/dy)** is **19**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the viscosity and presents the formula, workings and steps too.