Physics

Elongation Calculator

Find how much a bar stretches under tension.

Force (N)

Original length

Cross-section area (mm²)

Young's modulus (GPa)

Calculated Output

Elongation 1

Formula: ΔL = F·L ÷ (A·E)

Step-by-Step Breakdown

1. Values used:

2. Force = 10,000 N

3. Original length = 2

4. Cross-section area = 100 mm²

5. Young's modulus = 200 GPa

7. Elongation = 1

Did this calculator solve your problem today?

The math behind it

ΔL = F·L ÷ (A·E), from Hooke's law combined with stress and strain definitions.

10 kN on a 2 m steel bar (100 mm², 200 GPa) → 1 mm.

What if it stretches too far?

Beyond the yield point it deforms permanently.