8 thoughts on “3.13”

  1. How can we solve for the peak amplitude without using a graphing software like MATLAB? If we were asked to solve for peak amplitude in an exam, do we just equate x_dot to zero and solve for t within each given interval and then substitute the value of that t in x(t) for the given time interval?

    1. In most problems you will already have found the velocity; you could find the time when the velocity is zero then use that time to find the displacement. Alternately you can use your calculator to plot the displacement then use its built in functionality to find the maximum.

  2. I'm a bit confused as to how you got that particular solution 5.152t/omega^2 *(t-2*zeta/omega)... In the text the table says at/w^2 which would give us the 5.152t/omega^2.

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