How do you find both the escape velocity and radius of the event horizon using general relativity? The equation used for both escape velocity and the Schwarzschild radius
v=sqrt(2GM/r) and r=2GM/c^2
does not work.
Pic relate
>>8955351
you can use r = 2GM/c^2
>>8955754
That equation is a product of Newtonian mechanics. It isn't applicable to relativity.
>>8955769
give this a go
v^2 = c^2 * (Rs/R)
I always used the Newtonian one when I was at uni. (Rs is swartzchild radius) You can derive it from the relativistic energy formula as well as the one for radius
>>8956416
I'd also like it point out it is applicable as it was calculated in relevance to Einsteins Field Equations