Car Suspension Spring: k = 25 000 N/m, 5 cm Compression
A typical car coil spring (k ≈ 25 000 N/m) compressed 5 cm generates 1 250 N of restoring force.
How to use this tool
- Enter spring constant k and displacement x in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your restoring force f and the full breakdown beneath it.
Automotive suspension springs are very stiff to handle vehicle weight; a 5 cm bump compresses the spring with over a kilonewton of force.
Frequently asked questions
- What are typical spring constants?
- Car suspension: 10,000–50,000 N/m; pen spring: ~2 N/m; lab spring: 10–100 N/m; human Achilles tendon: ~1000 N/m.
- What does the negative sign mean?
- The restoring force always opposes the displacement, pulling back toward equilibrium. Stretch it right (+x) and the force acts left (−F).