In article posted Sat, 9 Jun 2012 20:45:15 -0700 (PDT) to sci.physics,
Koobee Wublee posted this..


On Jun 2, 11:08 am, Amid wrote:

Does relativistic speed really increases the mass of a body?

You can reformulate the question as
"Is observed body mass real body mass ?"

The best interpretation to this is to treat mass as a observed
quantity mirroring that energy is an observed quantity as well.
shrug

Or is it
just a way to calculate particles at relativistic speeds.

shrug

I mean with this that if you send a particle at 0.99c does it attract
masses around it 7 times more?

Interestingly experimental results seem to indicate that the
gravitating mass is the rest mass of the gravitating body. shrug

Rather
Gravitational mass
= Inertial mass
= total body mass
= rest / invariant body mass for body in the rest.

It is most likely that mass does not have anything to do with
gravitation in which (G M) is merely a grossly simplified model
describing gravitation. shrug



--
Poutnik