Understanding Relativity: The Effects of Relative Motion and Mass

[Trojan666ru]

Well, relativity says whatever moves, it's volume shrinks and mass increases (as observed).
So if i am traveling at 99% c with respect to a massive neutron star, do that star become a black hole for me?

 

[K^2]

No. Because the source of gravity isn't just mass, but the stress energy tensor. The way you interact with the neutron star is going to be different, but it's not going to turn into a black hole. The relativity aspect isn't lost. You can consider the problem from neutron star's perspective, and derive your trajectory. You will follow that same trajectory relative to neutron star from your own perspective.

 

[Dale]

No: http://math.ucr.edu/home/baez/physics/Relativity/BlackHoles/black_fast.html

Also, the concept of relativistic mass has been deprecated for decades. The invariant mass of a moving object is unchanged, and that is the thing that most physicists refer to when they say "mass".

 

[jtbell]

So if i am traveling at 99% c with respect to a massive neutron star, do that star become a black hole for me?

If I am traveling at 99.999999999% c with respect to you, do you become a black hole for me?

 

[ZapperZ]

Well, relativity says whatever moves, it's volume shrinks and mass increases (as observed).
So if i am traveling at 99% c with respect to a massive neutron star, do that star become a black hole for me?

Read this:

https://www.physicsforums.com/showpost.php?p=4106101&postcount=6

Zz.