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## Homework Statement

I have a question about simple harmonic motion:

**Where it says " if we denote the ratio k/m with the symbol omega squared ... "**: I know it says that they chose omega squared to make the solution simpler, but I mean, to me it doesn't really make sense. Omega is associated with angular speed, so how can they just make a relation between angular speed, k and m, as they did above, without justifying it?