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The free vibrations equation after Finite Element discretization of a structure is expressed as Mẍ+Kx=0. Which option is not correct about the free vibration case? X=0 d) KX=Mω2

The free vibrations equation after Finite Element discretization of a structure is expressed as Mẍ+Kx=0. Which option is not correct about the free vibration case? X=0 d) KX=Mω2 Correct Answer K-ω2M

In a free vibration analysis, the external load vector is zero and the displacements, x are harmonic x=Xeiωt where X is amplitude, on substituting x in governing equation we get X=0 or KX=Mω2X.

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