Probability at a temperature T that a system has a particular energy

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In statistical mechanics, the probability of a small system with two normal modes of vibration having energy less than 5ω1/2 at temperature T can be analyzed using the Boltzmann distribution, where p ~ exp(-E/kT). The natural frequencies are given as ω1 and ω2 = 2ω1, influencing the energy levels of the system. Understanding the energy states involves calculating the partition function and evaluating the probabilities associated with these states. The zero of energy is defined at T=0, which simplifies the calculations for higher temperatures. This approach is crucial for grasping the behavior of small systems in statistical mechanics.
Hector Triana
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Salutations, I'm starting in statistical mechanics and reviewing some related studying cases I would like to understand what occurs in small systems with normal modes of vibration, for example, a small system that has 2 normal modes of vibration, with natural frequencies $$\omega_1$$ and $$\omega_2=2\omega_1$$. So, what would be the probability at a temperature T that the system would get an energy less than $$5\omega_1/2$$? if it's assumed the zero of energy is taken as its value at $$T=0$$
I would like any guidance for better understanding of that kind of cases because those problems are very interesting, specially how to approach them.

Thanks for your attention.
 
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p ~ exp(-E/kT), E ~ omega^2
 
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