I am planning to apply to a MSc program in one of these universities: Hamburg (Atmospheric Science or Ocean and Climate Physics), Bonn (Astrophysics), Jena (Astrophysics), FU Berlin (Planetary Science). Are there any students on the forum who are a part of these programs and willing to answer...
I realize that if we move into the frame which has speed υ, the same speed as the rocket has in this very moment, F would in fact equal ma. But what about other frames? The force should be invariant when it comes to inertial reference frames.
Hello!
I have recently found this fascinating article: https://zenodo.org/record/3596173#.YJ1ttV0o99B
The author claims that classical equation for rocket thrust in incorrect because F is not equal to ma for a changing mass.
Neither my professors nor me can see any errors.
Do you think this...