The image above represents shear modulus.

To compute for shear modulus, two essential parameters are needed and these parameters are **young’s modulus (E) **and **Poisson’s ratio (v).**

The formula for calculating the shear modulus:

G = ^{E} / _{2(1 + v)}

Where:

G = Shear Modulus

E = Young’s Modulus

v = Poisson’s Ratio

Let’s solve an example;

Find the shear modulus when the young’s modulus is 32 and the Poisson’s ratio is 24.

This implies that;

E = Young’s Modulus = 32

v = Poisson’s Ratio = 24

G = ^{E} / _{2(1 + v)}

G = ^{32} / _{2(1 + 24)}

G = ^{32} / _{2(25)}

G = ^{32} / _{50}

G = 0.64

Therefore, the **shear modulus **is **0.64.**

**Calculating the Young’s Modulus when the Shear Modulus and the Poisson’s Ratio is Given.**

E = G (2 + 2v)

Where:

E = Young’s Modulus

G = Shear Modulus

v = Poisson’s Ratio

Let’s solve an example;

Find the young’s modulus when the shear modulus is 12 and the Poisson’s ratio is 10.

This implies that;

G = Shear Modulus = 12

v = Poisson’s Ratio = 10

E = G (2 +2v)

E = 12 (2 + 2(10))

E = 12 (2 + 20)

E = 12 (22)

E = 264

Therefore, the **young’s modulus **is **264.**

**Calculating the Poisson’s Ratio when the Shear Modulus and the Young’s Modulus is Given.**

v = ^{E – 2G} / _{2G}

Where:

v = Poisson’s Ratio

G = Shear Modulus

E = Young’s Modulus

Let’s solve an example;

Find the Poisson’s ratio when the young’s modulus is 48 and the shear modulus is 18.

This implies that;

G = Shear Modulus = 18

E = Young’s Modulus = 48

v = ^{E – 2G} / _{2G}

v = ^{48 – 2(18)} / _{2 x 18}

v = ^{48 – 36} / _{36}

v = ^{12} / _{36}

v = 0.33

Therefore, the **Poisson’s ratio **is **0.33.**

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

To get the answer and workings of the shear modulus 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 **Shear Modulus** under **Rock Mechanics**

The screenshot below displays the page or activity to enter your values, to get the answer for the shear modulus according to the respective parameters which are the **young’s modulus (E) **and **Poisson’s ratio (v).**

Now, enter the values appropriately and accordingly for the parameters as required by the **young’s modulus (E) **is **32 **and **Poisson’s ratio (v)** is **24**.

Finally, Click on Calculate

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