The image above represents normal stress.

To calculate for normal stress, two essential parameters are needed and these parameters are **normal force (ΔN)** and **area (ΔA).**

The formula for calculating the normal stress:

σ_{n} = ^{ΔN} / _{ΔA}

Where;

σ_{n} = Normal Stress

ΔN = Normal Force

ΔA = Area

Let’s solve an example;

Calculate the normal stress with a normal force of 12 and an area of 22.

This implies that;

ΔN = Normal Force = 12

ΔA = Area = 22

σ_{n} = ^{ΔN} / _{ΔA}

σ_{n} = ^{12} / _{22}

σ_{n} = 0.54

Therefore, the **normal stress** is **0.54 Pa.**

**Calculating the Normal Force when the Normal Stress and Area is Given.**

ΔN = σ_{n} x ΔA

Where;

ΔN = Normal Force

σ_{n} = Normal Stress

ΔA = Area

Let’s solve an example;

Calculate the normal force when the normal stress is 25 with an area of 10.

This implies that;

σ_{n} = Normal Stress = 25

ΔA = Area = 10

ΔN = σ_{n} x ΔA

ΔN = 25 x 10

ΔN = 250

Therefore, the **normal force** is **250.**

**Calculating the Area when the Normal Stress and Normal Force is Given.**

ΔA = ^{ΔN} / _{σn}

Where;

ΔA = Area

ΔN = Normal Force

σ_{n} = Normal Stress

Let’s solve an example;

Given that the normal stress is 20 and the normal force is 240. Find the area?

This implies that;

σ_{n} = Normal Stress = 20

ΔN = Normal Force = 240

ΔA = ^{ΔN} / _{σn}

ΔA = ^{240} / _{20}

ΔA = 12

Therefore, the **area** is **12.**

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

To get the answer and workings of the normal stress 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 **Geology**** **under **Add-on.**

Now, Click on **Rock Mechanics**** **under **Geology**

Now, Click on **Normal Stress **under **Rock Mechanics**

The screenshot below displays the page or activity to enter your values, to get the answer for the normal stress according to the respective parameters which are the **normal force (ΔN)** and **area (ΔA).**

Now, enter the values appropriately and accordingly for the parameters as required by the **normal force (ΔN)** is **12 **and **area (ΔA)** is **22**.

Finally, Click on Calculate

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