A 4 cm cube has its upper face displaced by 0.1 mm by a tangential force of 8 kN. Calculate the shear modulus of the cube.

Explanation

To calculate the shear modulus of the cube, we can follow these steps:

### Step 1: Understand the given values
- The side length of the cube (L) = 4 cm
- The displacement of the upper face (ΔL) = 0.1 mm = 0.01 cm (conversion from mm to cm)
- The tangential force (F) = 8 kN = 8000 N (conversion from kN to N)

### Step 2: Calculate the area (A) of the cube's face
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