Recent content by heitor

Is there any interpretation for this? A 3-force in Special Relativity does not have the same meaning as in Newtonian Mechanics? I did proved them, it was the previous question in the list.

This is an exercise of Special Relativity the professor asked last week. Sorry for the long post, I hope you don't get bored reading it, also, this is my first post here :shy: Homework Statement Defining the 4-force that acts on a particle as the proper-time variation of the 4-momentum...