- #36
cytokinesis
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Originally posted by meister
Is this GR saying there is no gravitational force or is this classical physics?
What do you mean by that? What is the 'this' to which you are referring?
Originally posted by meister
Is this GR saying there is no gravitational force or is this classical physics?
I was referring to this whole post:Originally posted by cytokinesis
What do you mean by that? What is the 'this' to which you are referring?
Originally posted by Chi Meson
You said:
"since you were inside of the elvator, when it accelarated the force pushed you against the floor to simulate gravity."
And there is your error in understanding. THere is no force at all pushing you against the floor. IF your book says that there is, throw it away.
THe force on you, is the floor pushing "up" on you.
Originally posted by meister
Ohhhh, is he just talking about space where the force of the Earth's gravity can be neglected for the most part?
That's not quite correct. Einstein himself never said gravity was not a force. What he showed was that gravity and inertial forces are identical in nature. In Newtonian mechanics one might be tempted to think that inertial forces are not "real" forces. However Einstein saw things differently. To him, and thus his theory, inertial forces are "real."Originally posted by Cyberice
Anyway, Einstein supposedly proved that there was no force of gravity, that it could be subsituted with accelaration, and that gravity is made by bent space time. I have quite a few (semmingly) errors in which I may have just misinterpreted but desire to point out.
Einstein's equivalence principle is stated as followsThe first is the gravity/accelaration annalogy of Einstien in a rotating elevator in space. The analogy is fine and makes sense. It states that if you were to be in a constantly accelarated (rotated) elevator in space it would pull you to the floor of the elevator and would simulate gravity, and if there were no windows you could not tell the difference if you were in an elevator on the earth.