4. The mechanical system represented in the figure consists of a block with mass m = 40kg and a spring with elastic constant k = 5000 N/m. The base acceleration is the periodic function that is represented in the figure. Determine: (a) The representation of the excitation in Fourier series; (b) The motion of the mass in relation to the base, z(t). A -T,/2 -T,/4 T/4 T./2 -A
4. The mechanical system represented in the figure consists of a block with mass m = 40kg and a spring with elastic constant k = 5000 N/m. The base acceleration is the periodic function that is represented in the figure. Determine: (a) The representation of the excitation in Fourier series; (b) The motion of the mass in relation to the base, z(t). A -T,/2 -T,/4 T/4 T./2 -A
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Transcribed Image Text:4. The mechanical system represented in the figure consists of a block with mass m =
40kg and a spring with elastic constant k = 5000 N/m. The base acceleration is the
periodic function that is represented in the figure. Determine:
(a) The representation of the excitation in Fourier series;
(b) The motion of the mass in relation to the base, z(t).
z(1)
A
-T,/2
- T,/4
T/4
,T./2
t
-A
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