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Para o sistema apresentado, determine: a) As frequências naturais. b) Os ...

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Para o sistema apresentado, determine:

a) As frequências naturais.

b) Os modos de vibrar(Ө/X).

c) Represente os modos de vibração.

 Dados: L=2m, k1=15kN/m , k2=27kN/m , m=7kg e L1=3L/4.

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