00:01
We are given this graph which describes the motion of a damped harmonic oscillator.
00:08
So the y, which is the distance from the origin for the damped oscillator, that is given by a0, e to the power minus b t, cos omega t, where omega is the frequency given by 2 pi by t, but t is the time period.
00:28
Now let us consider this point a on the graph where y equal to 4 centimeter and t equal to 0 seconds.
00:40
So therefore from this equation we get 4 equal to a0, e to the power 0 and then cos 0, which leads to a0 equal to 4 centimeters.
00:54
So the amplitude is equal to 4 cm.
00:57
Now let us find out the time period of this oscillation.
01:04
Let us consider the point a and b.
01:06
So this is the motion from a to b goes in one time period, t because in these two points, the maximum amplitude is obtained...