Is there a force of gravity? A better question to ask is "Is free-fall
accelerated?"
The answer is:
It can't be known, I suppose. This I know. There exist no freely-falling
frame of reference where its distance from the center of gravity can not be
calculated by the acceleration of another freely falling object moving with
respect to the frame. Since the freely falling frame and freely falling
object both accelerate with respect each other and with respect to the "GCI"
gravitationally centered inertial frame. Then it would not be unreasonable
to consider free-fall accelerated.
Re: Gravitational potential - A challenge to Paul Anderson (and to SR) ... >>Don't you know that gravity is caused by mass and not by acceleration?... Only in the inertail frame it is falling towards the surface while ... >>accelerated is equivalent to that of being in a gravity field....water surface.... (sci.physics.relativity)
Re: Hafele & Keating, Einstein, Dingle,Cocke, and Scott Murray ... >In which frame are you, and to which frame apply some of the other ... inertial observer stationary w.r.t the axis of the earth.... displacement and g is the measured acceleration at that point in the ... acceleration due to gravity at the point you are measuring the weight. ... (sci.physics.relativity)
Re: The speed of gravity revisited ... These are 4-space mathematical devices to try to explain gravity... In what frame do you observe this acceleration? ... put your accelerometer aboard - you'll find the acceleration... indeed accelerating upward.... (sci.physics.relativity)
Re: Gravitational potential - A challenge to Paul Anderson (and to SR) ... >Don't you know that gravity is caused by mass and not by acceleration?... centre of the earth without ever getting any nearer to it? ... If by 'inertial frame' you mean a frame in which no rotation is taking ... (sci.physics.relativity)
Re: TomToms stupidity (re: was always TomToms stupidity) ... >Consider a 1 unit ruler initially at rest in frame A. ... Do you mean that, as measured in frame... assuming that you coordinate the acceleration... assume that locally gravity is indistinguishable from ... (sci.physics.relativity)
