Push a child on a swing and let go — the arcs shrink with every pass until the swing hangs still. That dying-out is damping: a force that opposes motion and drains energy from every oscillation. For the common viscous case, the damping force is simply the damping coefficient times the velocity, pointing the opposite way: F = −c × v. Double the speed, double the resisting force.

Your car's shock absorbers are damping in action. Without them, every pothole would set the springs bouncing for a minute; with them, one controlled rebound and done. Screen door closers, earthquake dampers in skyscrapers, and the suspension on a mountain bike all tune the same trade: too little damping and things oscillate forever, too much and the system feels dead and sluggish. Engineers even name the sweet spot — critical damping — where the system settles fastest without overshooting.

This calculator computes the damping force from its two ingredients. Type the damping coefficient in the Variable A box (in newton-seconds per meter, from your damper's spec sheet) and the current velocity in the Variable B box in meters per second. The Result box gives the resisting force in newtons — the push your damper is exerting at that instant to calm the motion down.

With the pre-filled defaults — Variable A 10, Variable B 5 — the Damping Calculator returns Result 50.0000. Change any input and those results update instantly, so you can see exactly how each number you enter moves the answer.