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- General Relativity and forces - two separate cases
It seems that there are two distinct gravitational cases to consider:
a) Object with no external contact with any type of stuff (e.g., a person in free-fall in a vacuum)
b) Object WITH external contact (e.g., a person standing on the ground)
I've enjoyed reading and listening to various discussions on General Relativity but these two cases are not clearly discussed. I believe that this is very important since - if I understand the basics properly - in the first case there are ZERO net external forces on the Object whereas in the second case there is a net external force on that Object..
It would be wonderful to get opinions on this - especially from those who teach GR.
Bob
a) Object with no external contact with any type of stuff (e.g., a person in free-fall in a vacuum)
b) Object WITH external contact (e.g., a person standing on the ground)
I've enjoyed reading and listening to various discussions on General Relativity but these two cases are not clearly discussed. I believe that this is very important since - if I understand the basics properly - in the first case there are ZERO net external forces on the Object whereas in the second case there is a net external force on that Object..
It would be wonderful to get opinions on this - especially from those who teach GR.
Bob