A damped oscillator has an initial amplitude of 1.8 m and a time constant of 32 s. What is its amplitude after 75 s?

Respuesta :

Answer:

The amplitude after 75 s, x(t) = 0.558 m

Given:

Initial Amplitude, A = 1.8 m

time constant, [tex]\tau [/tex] = 32 s

Solution:

Now, to calculate the amplitude of the damped oscillation after 75 s, we use the relation:

Amplitude after 75 s, x(t) = A[tex]e^{-\frac{t}{2\tau}}[/tex]        

Now, putting the value in the above relation:

x(t) = 1.8[tex]e^{-\frac{75}{2\times 32}}[/tex]

x(t) = 1.8[tex]e^{-1.17}[/tex]

x(t) = 0.558 m