20. Finding natural frequencies and mode shapes

Multi-Degree of Freedom Dynamics
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Questions and discussion for this lecture live here. Fire away by hitting Reply below :fire:

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I was having trouble with the animation (in this lecture and all following lectures which included animation) and getting an error: ā€œJavascript Error: IPython Is Not Definedā€. I made the following change and it started working (but I will say Iā€™m new to Python so Iā€™m not sure if this is a good fix).

%matplotlib notebook

Changed to:

%matplotlib widget

Also, I often had to restart the entire kernal if making any changes to any plot, otherwise the same error would occur when using matplotlib.

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Thanks for posting this update Dan, much appreciated.
S