Question

Einstein said that if something could travel at light speed its mass would duplicate. How could it be?

Answer 1

Hy!

He said that if something runs form the speed of light the mass will increase

To infinity!

And just imagine is that possible !

According to E=MC^2

If speeed becomes.. infinitesimal

It will be energeticaally small?!

Thanks!

Answer 2

Answer:

Einstein said that if something could travel at light speed its mass would duplicate. Because, the higher energy atoms contribute more mass to the total mass than before the box was heated. So, if you try to push on the box, you will discover that its inertia will be larger (it won't accelerate as quickly).