Answer to Question #157816 in Classical Mechanics for Sharmila devi

Question #157816

A charged particle in moving under the influence of a point nucleus. Find the orbit of the particle and periodic time in the case of an elliptical orbit.


1
Expert's answer
2021-01-23T10:18:48-0500

Answer

A charged particle(let electron) in moving under the influence of a point nucleus.

Then central force is given

F=ze2r2F=\frac{-ze^2}{r^2} ;k=ze2;k=ze^2

E=k2a=ze22a\frac{-k}{2a}=\frac{-ze^2}{2a}

Eccentricity

ϵ=1+2Eh2mz2e4=1+h2amz2e2\epsilon=\sqrt{1+\frac{2Eh^2}{mz^2e^4}}=\sqrt{1+\frac{h^2}{amz^2e^2}}

This shows elliptical path.

Now time period

T=4π2a2mk=2mema2zT=\frac{4\pi ^2a^2m}{k}=\frac{2m}{e}\sqrt{\frac{ma^2}{z}}


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