- #1
TerryW
Gold Member
- 191
- 13
I've run into a couple of problems with exercise 12.6 in MTW (attached).
At this stage, all I'm asking is for someone to give me answers to the following questions:
1. What are the Rα'β'γ'δ' in the primed co-ordinate system? and
2. What are the non-zero connection coefficients in the primed co-ordinate system?
I started with an Earth bound co-ordinate system fixed so that the x-axis runs from the centre of the Earth through the prime meridian at the equator and worked to get the co-ordinate transformations between (x' , y') and (x , y) and used -2GM/R2 for Rα1010 and GM/R2 for R2020. The results for R1'0'1'0' and R2'0'2'0' didn't turn out as I think they should.For my connection coefficients I ended up with
Γ1'0'0' = +ω2x' ,
Γ2'0'0' = -2ω2y'
Γ1'0'2' = -ω
Γ2'0'1' = +ωWhich didn't give a good result for the geodesic equation for y'.
I used the connection coefficients to calculate R1'0'1'0' and Rα2'0'2'0' and ended up with 2ω2 and -ω2 respectively which also doesn't look quite right.Can anyone put me on the right track here?RegardsTerryW
At this stage, all I'm asking is for someone to give me answers to the following questions:
1. What are the Rα'β'γ'δ' in the primed co-ordinate system? and
2. What are the non-zero connection coefficients in the primed co-ordinate system?
I started with an Earth bound co-ordinate system fixed so that the x-axis runs from the centre of the Earth through the prime meridian at the equator and worked to get the co-ordinate transformations between (x' , y') and (x , y) and used -2GM/R2 for Rα1010 and GM/R2 for R2020. The results for R1'0'1'0' and R2'0'2'0' didn't turn out as I think they should.For my connection coefficients I ended up with
Γ1'0'0' = +ω2x' ,
Γ2'0'0' = -2ω2y'
Γ1'0'2' = -ω
Γ2'0'1' = +ωWhich didn't give a good result for the geodesic equation for y'.
I used the connection coefficients to calculate R1'0'1'0' and Rα2'0'2'0' and ended up with 2ω2 and -ω2 respectively which also doesn't look quite right.Can anyone put me on the right track here?RegardsTerryW