- Restoring Force
Definition: A restoring force is the force that acts to
bring a displaced system back to its equilibrium position. It is directly
proportional to the displacement.
Where k is constant and Negative
sign presenting that restoring force is opposite to displacement.
2. 2. Damping Force
Definition: A damping force is the resistive force that opposes
the motion of an oscillating body. It reduces the amplitude of oscillation with
time.
Origin: friction, air
resistance, viscous drag, etc.
It is directly
proportional to the velocity.
Where λ is damping constant
and
negative sign → damping
force always acts opposite to velocity.
3. 3. Equation of Motion for Damped Oscillator