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3. (20%) A vibration absorber, which is a spring-mass system (k2, m2), is added to a system (ki, mi) subject to a harmonic fo
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F4) -.) A AK2(- K2 FH)FSint ) F) (#)92 %x-w) tK t K2 (-M2 = Fo Sint -G) K, (M) K, (M) Write equs (i) Cii ) in oSinat K1HK2 -(KI+Km -K2 K 2 -1 -K2 K K1-m24 k Kitk,s -k Ada A K K-m, K2 itki N k,fosindt 2 Fo Sinidt WI -K2 b) a l 4b K tKzAi 2 -0 1 K

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