Page 16 - WAVES
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Damping
Graph
Damping process is a process of losing
energy in a vibrating/ oscillating system Displacement
in the form of heat.
The amplitude of an oscillating system will
gradually decrease and become zero when
the oscillation stops. Time
Causes
To enable an oscillating system to go on
1. Loss of energy in the system to continuously, an external force must be
overcome frictional forces or air
resistance → applied to the system.
External damping .
The external force supplies energy to the
forced
system. Such a motion is called a _________
2. Loss of energy due to the extension oscillation
________________.
and compression of the molecules in
the system →
Internal damping . The frequency of a system which oscillates
freely without the action of an external force is
called the natural frequency .
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