Recent content by n1mrod

also don't forget about inclined planes, you must be dealing with the normal force because if it's an inclined plane you have to take into account the x and y-components.

Okay now I understand it, I went to my professor this morning on my class, and also with the help you guys gave I was able to figure out.. now I can move forward =P thanks a lot for the help!

ahhh okay, so my mistake was even bigger heheh. Hey, please I asked people to correct me, you weren't being picky, you were correcting me :D I'm just starting with General Relativity and I really want to learn, but as you know it's not very easy to get used to the nomenclature since it's very...

thanks! I know that I did a mistake there, the one I wrote is the inverse already, I'll fix my notations for next time. But still, I don't know how to proceed to calculate the symbols once I have the inverse metric.

Hey, the e was wrong, I mispelled when I typed in, sorry. Also, I used G_ab as the inverse. I'm sorry I'm just not used how to type these things here on the forum, but I used G_ab as the inverse, that's why its R^-2 .

Hello! It absolutely is, I just saw I forgot to write, I wrote Gab as being the inverse metric already, so there I believe it is R^-2, shouldn't it?

Okay, but I put the metric I found. As you said, to calculate the symbols it's only necessary the Metric and the inverse metric, the inverse metric is calculated straight from the metric right? So I believe we have everything that is needed, but please correct me if I'm wrong. Thanks.

Hey I'm sorry, I was writing the topic and the second part I copied from my other homework assignment, sorry I'm going to fix that. Until the "matrix" Gab is what I did, but I'm not very sure how to calculate the christoffel from there, can you help me?

Hey Guys, I'm new here on the forum, and I hope someone can help me out. I'm solving one of my GR homework exercises and I'm asked to find the christoffel symbols corresponding to cylindrical coordinates. I'll post my work and please correct if you see mistakes. I found the metric to be dR^2 +...

In college, you learn that: Biology is applied Chemistry Chemistry is applied Physics Physics is applied Maths and Maths, it's something else..

Hey Guys, I'm new here on the forum, and I hope someone can help me out. I'm solving one of my GR homework exercises and I'm asked to find the christoffel symbols corresponding to cylindrical coordinates. I'll post my work and please correct if you see mistakes. I found the metric to be dR^2...