reduction in motion of an oscillatory system through frictional forces

In physics, damping is any effect that tends to reduce the amplitude of vibrations.[1]

Graph of a damped vibratory deflection y.
Damped spring.

In mechanics, the internal friction may be one of the causes of such damping effect. For many purposes the damping force Ff can be modeled as being proportional to the velocity v of the object:

where c is the damping coefficient, given in units of Newton-seconds per meter.

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  1. Tongue, Benson, Principles of Vibration, Oxford University Pres, 2001, ISBN 0-195-142462