Estimating the Bohr radius from the uncertainty principle

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SUMMARY

The discussion centers on estimating the Bohr radius using the uncertainty principle, specifically the equation p = h/r. Participants suggest substituting known values for kinetic energy (K) and potential energy (V) to derive the total energy E as a function of radius E(r). The approach involves taking the derivative to find the minimum energy configuration. The consensus is that the problem is straightforward, relying on approximations and assumptions rather than rigorous calculations.

PREREQUISITES
  • Understanding of quantum mechanics principles, particularly the uncertainty principle.
  • Familiarity with the Bohr model of the atom.
  • Basic calculus skills for differentiation.
  • Knowledge of energy concepts in physics, including kinetic and potential energy.
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  • Study the derivation of the Bohr radius in detail.
  • Explore the implications of the uncertainty principle in quantum mechanics.
  • Learn about energy minimization techniques in physics.
  • Investigate the role of approximations in quantum mechanical calculations.
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Students and educators in physics, particularly those focusing on quantum mechanics and atomic theory, as well as researchers interested in the application of the uncertainty principle in estimating atomic properties.

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Homework Statement
In the below picture
Relevant Equations
Heisenberg uncertainty i guess
1649908091019.png


Soo. I think this problem is too direct and easy so I think I got it in wrong way: p=h/r and then plug in the K and V and then we get E=E(r) and get derivative and we have minimum? What do you think? is there sth I am missing?
 
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It seems fine to me. It is not supposed to be a hard/rigorous problem after all, since you are doing approximation and some assumptions before starting the calculations.
 

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