Re: Centrifugal force

[Rick Tarara <rtarara@SAINTMARYS.EDU>]

----- Original Message -----
From: "John Mallinckrodt" <ajm@CSUPOMONA.EDU>
> One minor point: In the case of Newtonian gravity, that "agent"
> somehow manages to act instantaneously regardless of distance.

I'm not up on my General Relativity, but is this really true?  If the moon
were suddenly sucked into a wormhole and disappeared from this region of the
universe, would the earth feel the effect instantly or 1.25 seconds later?
Certainly the electrical force has a finite propagation time (I vaguely
recall working with such time delays in my Jackson, graduate E&M course).
Doesn't the gravitational force also supposedly propagate (through
gravitons) at c?

Rick