Quantum Oscillator: Pendulum Energy Differences & Observability

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SUMMARY

The discussion centers on the energy differences between quantum states of a pendulum modeled as a quantum oscillator with a length of 1 meter. Participants confirm that the energy levels can be expressed using the formula E_n = (n + 1/2)ħ√(k/m), but emphasize that without the mass of the pendulum, precise calculations are impossible. The energy differences between states E_n and E_n+1 are deemed negligible and not observable due to their low values. The angular frequency of the pendulum is determined to be √(g/L), which is essential for further calculations.

PREREQUISITES
  • Understanding of quantum mechanics, specifically quantum oscillators
  • Familiarity with the concept of energy levels in quantum systems
  • Knowledge of pendulum dynamics and harmonic motion
  • Basic proficiency in using the formula for angular frequency, √(g/L)
NEXT STEPS
  • Calculate energy differences for a quantum harmonic oscillator using specific mass values
  • Explore the implications of low energy observability in quantum systems
  • Investigate the relationship between angular frequency and energy levels in pendulum systems
  • Learn about the effects of varying pendulum lengths on energy states
USEFUL FOR

Students and researchers in physics, particularly those studying quantum mechanics, pendulum dynamics, and energy state calculations in quantum systems.

GreenLRan
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Homework Statement



Assuming a pendulum to behave like a quantum oscillator, what are the energy differences between the quantum states of a pendulum of length 1m? Are such differences observable?

Homework Equations





The Attempt at a Solution



would the energy differences just be 1 since for each energy state n you have E_n=(n+1/2)h_bar*sqrt(k/m)? This would not be observable either since these are such low energies... correct?
 
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Compare E_n to E_n+1
 
I think they want you to calculate the energy in joules.
 
But wouldn't they have provide him with the mass of the pendulum?
in his statement they only gave him the length , I think it's like robb said , a comparison between E_n and E_n+1
 
No they don't, it's a pendulum in harmonic oscillation, so you can say its angular frequency is simply sqrt(g/L), then solve for (1/2)hw
 

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