Wave and Oscillation Lecture two
Q. Right down the definition of Amplitude and Phase.
Answer:
Amplitude : The maximum displacement of the
vibrating or oscillating object on both sides of the mean position is called
its amplitude.
Phase:
The state of motion of a vibrating particle at
any instant is called its phase at that instant |
| figure 1 |
From the
above figure,
 |
| triangle |
, where
OM = OPsin wt
y = OPsin wt , where y is the displacement from the origin
O.
y = a sin wt , where op = ox = a is
the radius of the circle.
 |
| figure 2 |
If the
initial phase (a) considered then y = a sin (wt + a} ( figure 2)
 |
| figure 3 |
for ( figure 3 ) y = a sin (wt - a)
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