تم الحل ✓
categoryالرياضيات
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
(1 point) Consider the double mass/triple spring system shown below.
www.www.www.- click to expand.
Both springs have spring constants k$, and both masses have mass m; each spring is subject to a damping force of Ffriction = -cx' (friction proportional to velocity).
We can write the resulting system of second-order DEs as a first-order system, w' (t) = Aw(t), with w = (x1,x1, x2, x)
For values of k = 4, m = 1 and c = 1, the resulting eigenvalues and eigenvectors of A are
=
1,2 -0.5±3.24i, ₁ =
23.4 -0.51.93i, v3
–0.028 – 0.194
0.679
0.028 +0.194.
-0.679
-0.79-0.306i
0.633
-0.079 0.306i
0.633
and
(a) Find a set of initial displacements x1 (0), x2 (0) that will lead to the slow mode of oscillation for this sytem. Assume that the initial velocities wil be zero.
(x1(0), x2(0)) =
Enter your answer using angle braces, (and).
(b) At what frequency will the masses be oscillating in this mode?
Frequency=
rad/s
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