Bernardz <Bernard_zzz@REMOVEhotmail.com> wrote in message news:<MPG.1bc1653b1081a474989b66@news>...
In article <9c3da975.0409251548.59e0ef06@posting.google.com>,
macromitch@internetCDS.com says...
Bernardz <Bernard_zzz@REMOVEhotmail.com> wrote in message news:<MPG.1bc04a22c925437b989b60@news>...
In article <9c3da975.0409231600.64a4cf9@posting.google.com>,
macromitch@internetCDS.com says...
Bernardz <Bernard_zzz@REMOVEhotmail.com> wrote in message news:<MPG.1bbd80b5d008512a989b5b@news>...
In article <9c3da975.0409221949.39a202f8@posting.google.com>,
macromitch@internetCDS.com says...
I have been wrong in the past pushing accelerations limit; except for
rotation.
Rotation has a speed and a changing direction. Centrifugal force is
the
closest thing to gravity.
Even if that would be limitless gravity still would not be.
There is no limit to Centrifugal force in relativity either.
I will try to explain it using a slightly modified Newtonian physics
Say we had an object spinning on a string.
Under Newton the formula for the F=mv^2/r
Using relativity we know as the V increases the observer in the middle
will see that the M will increase and R will decrease so causing F to
increase.
Bernard, what I am concerned with is V's limit. It is Special
Relativistic.
You cannot rotate at the speed of light.
It is true that force is unlimited because mass can be unlimited.
The same is true for gravity; it is limited to less than - an
equivalent - light speed acceleration in weight. But its force would
be unlimited because mass can be.
Limited gravity is the law. That is why there are no infinities in
gravity.
Black holes are the very failure of General Relativity.
Einstein knew as much. He didn't believe in a complete collapse.
But he never saw the obvious - that his gravity should be a limited
strength theory.
Mitch Raemsch -- Light Falls --
However the observer could never reach C under SR. What he can do is get
closer and closer to it.
Bluntly however at C the observer on the ball would see the string as
having no length while his mass would be infinite. Velocity would be
unaffected by the speed so re-using this Newtonian formula we have
F=MV^2/R
The force is infinite.
I am not saying that force is not unlimited. I am saying that speed
and acceleration are.
Mitch Raemsch -- Time Moves --
You are right about speed but not acceleration!
Same example
Newtonian physics
F=MA----------(1)
F=MV^2/R----(2)
=> A= V^2/R
As R approached zero , A (acceleration) -> infinity.
Thankyou Bernard. Others on this board think I can't be corrected.
Just because they can't correct me doesn't mean that noone can.
I'll take your correction.
Acceleration is unlimited.
But gravity isn't. That's my point.
Mitch Raemsch -- Light falls --
.