- #1

JohanL

- 158

- 0

[tex]

\frac {d^2u} {d\phi^2}+u=3Mu^2

[/tex]

u=1/r

I want to show that there is closed orbits with constant radius and also calculate the radius of the orbits as a function of the Schwarzschild radius.

Can anyone help me with this? Or give me some hits?

As simple as possible please.