Re: Calculating v[t], x[t], and t'[t] for an constant accelerated object.
- From: "*** rD" <paulpsremove@xxxxxxxxxx>
- Date: Wed, 8 Jun 2005 17:38:31 +0100
Repost as previous seems to have got lost
"Sue..." <suzysewnshow@xxxxxxxxxxxx> wrote in message
news:1118130196.430100.67420@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
| <<
| I am currently studying AE's EoMB (SR)? papers to try and find the
| justification
| for relativistic velocity correction from an energy pov.
| >>
|
| A goalie repeatedly fires a rifle at a hocky puck to accelerate it.
| When the pucks velocity equals the rifles muzzle velocity,
| the process is incapabable of further accelerating the puck.
|
Yes but if he stands on the puck his potential velocity is infinity or
untill he runs out of bullits.
| If the goalie skate after the puck, still firing, he can add
| his velocity wrt the ice to the muzzle velocity and accelerate
| the puck a bit more.
|
| Now... if you accept that the puck's velocity was asymtotically
| aproaching the muzzle velocity because it was getting heavier,
No I dont, it was just a reducing velocity differential that was reducing
the acceleration
| then you must explain how pucks loose weight when chased
| by goalies. ;-)
I don't think or think I need to explain why pucks loose weight ? except
under the condition of the goalie standing on the puck firing.
|
| << So now, if we still want to maintain some meaning for relativistic
| mass, then we'll have to realise that it has a directional
| dependence--as if the object somehow has more mass in the direction of
| its motion, than it has sideways. Evidently the idea of relativistic
| mass is becoming a little more complicated than at first we might have
| hoped! And this is another reason why, in the end, it's so much easier
| to just take the mass to be the invariant quantity m, and to put any
| directional information into a separate, matrix, factor. >>
| http://math.ucr.edu/home/baez/physics/Relativity/SR/mass.html
|
Ah, reletivistic mass, have not read your link yet but I will.
Mass is an energy property of a multi dimensional structure. A structure can
also contain energy in a single axial form, you cant just add them together
as if they were the same thing as to transform one energy state to the other
needs considerable amount of energy.
| Sue...
|
.
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