The Graph of an Idealized Quantized Spring-Mass Oscillator

[Oribe Yasuna]

Homework Statement

See attached image.
Match the type of system or situation to the appropriate energy level diagram.
1) hadronic (such as

+)
2) idealized quantized spring-mass oscillator
3) nuclear (such as the nucleus of a carbon atom)
4) vibrational states of a diatomic molecule such as O2
5) rotational states of a diatomic molecule such as O2
6) electronic, vibrational, and rotational states of a diatomic molecule such as O2
7) electronic states of a single atom such as hydrogen

Homework Equations

No equations.

The Attempt at a Solution

I know the typical spacing between levels in a hadronic system is 10^8 eV = 100 MeV
I know the typical spacing between levels in a nuclear system is 10^6 eV = 1 MeV
I know the typical spacing between rotational states is 10^-4 eV = 0.0001 eV
I know that vibrational states are graphed using a parabolic function.
I know g. measures delta E_rot, delta E_elec and delta E_vib.
Finally, I've been working with the model for the electronic states of a hydrogen atom a lot so I'm sure it's b. because it has 4 energy levels, the ground state is far below the rest, and its an inverse graph.

What stumps me is an idealized quantized spring-mass oscillator. I don't know what that is, but I only have one remaining graph (e.) so why is my answer wrong?

 

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It is hard to read the image.

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