Phase difference: fraction of an
oscillation between the
vibrations of two oscillating
particles.
Angular frequency: the rate of change
of an angle expressed in radians per
second.
Requirements of SHM
A mass that oscillates
A position where the mass
is in equilibrium
A restoring force that acts to return
the mass to its original position,
where f is proportional to x.
Simple Harmonic Motion: when
-acceleration of a body is
proportional to its displacement
from the equilib position, when
they are both directed towards
the equilib position.
Damped oscillations:
when the ampliude of an
oscillation descrease as
friction transfers its
energy to its
surroundings.
Resonance: force mostion of
an oscillator, characterised by
maximum amplitude when
forcing frequency is equal to
the natural frequency