# The mode shapes of an un-damped two degrees of freedom system are {1 0.5 } T and {1 -0.675 } T . The corresponding natural frequencies are 0.45 Hz and 1.2471 Hz. The maximum amplitude (in mm) of vibration of the first degree of freedom due to an initial displacement of {2 1}T (in mm) and zero initial velocities is ____

#### Comments and Answers (2)

**Vinay** * *

anyone have any solutions

**Andy** * *

What is the correct solution?

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