\(V^2=\frac{k}{m r^3}\)

we know

\(m v r=\frac{n h}{2 x}\)

\(m^2 v^2 r^2=\frac{n^2 h^2}{4 \pi^2}\)

\(\frac{m^2 k r}{m r}=\frac{n^2 h^2}{4 x^2}\)

\(r=\frac{m k^3 \pi^2}{n^2 h^2}\)

\(k \cdot f=\frac{1}{2} m v^2=\frac{1}{2} m / \frac{k}{m r^3}\)

\(=\frac{1}{2} m^m \frac{K}{m^1 m^3}\)

\(E \alpha n^6\)