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 Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...The Space and Astronomy Agora I Would Like You.. Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response ToPosted by Bruce on May 19, 2001 20:45:26 UTC

to just be honest about what you can do and can't do. Period. I've told you many times you don't need anything more than a piece of paper and a pencil to solve these problems.
Do you think Newton's formula could possibly be accurate for any physics outside the weak field? No is the answer. This is why Newton can't describe why Mercury's perhelion precesses. Einstein can.
Three different perspectives for orbit times and speed.
In geometric units
Tshell is measured by an observer at rest with respect to a point on the orbit timing a full orbit of the satellite.

Tshell=2pr/vshell

v2shell=M/r(1-2M/r)

Torbiter is the time for one full orbit on a swristwatch carried by the satellite.

Torbiter=[2pr/vshell][1-v2]1/2

Since you say you know SR you can figure vorbiter out for yourself. How about posting your answer?

Tbookkeeper is the time measured on the wristwatch of the far away observer of General Relativity.

Tbookkeeper=[[2pr/vshell][1-v2]-1/2

v2bookkeeper=M/r

Three different perspectives on time and speed of a circular orbit at r.