Hooke's Law Calculator

Find the spring force from stiffness and extension.

Spring force (N) 20

Formula: F = k·x

Step-by-step with your numbers:

1. Values used:

2. Spring constant k = 200 N/m

3. Extension x = 0.1

5. Spring force = Spring constant k x Extension x = 200 x 0.1 = 20N

Did we solve your problem today?

Hooke's law says a spring's restoring force is proportional to how far it is stretched.

The math behind it

F = k·x, where k is the spring constant (stiffness) and x is the displacement from rest.

k = 200 N/m stretched 0.1 m → 20 N.

When does it break down?

Beyond the elastic limit, where the spring deforms permanently.