Which of the two definitions of mass is the correct?
86527
What's the difference between the five masses: inertial mass, gravitational mass, rest mass, invariant mass and relativistic mass?
87598
Can we define the effective mass or the moving mass of a photon?
84892
What truly is mass, and is there a direct way to measure it?
60522
Why is the mole/"amount of substance" a dimensional quantity?
68831
Why mass terms are forbidden?
93539
Why is $M\frac{dv}{dt} = v_{rel} .\frac{dm}{dt}$ correct and $(M - dm)\frac{dv}{dt} = v_{rel} .\frac{dm}{dt}$ wrong?
138350
Correct formula for Mass Defect / Binding Energy?
82362
Is there a fundamental reason why gravitational mass is the same as inertial mass?
28178
Equivalence of two Distinct Definitions of the Current Density $\textbf{J}$
74211
Protons and Neutrons Overshoot Actual Mass?
62419
Einstein equation $E=mc^2$: Does it mean an object without mass does not have energy?
145073
When to use Conservation of Energy vs Conservation of Momentum
80749
If Energy can be converted into mass, why can it not be converted into charge?
95125
Rest mass of the photon
116949
What gives mass to black hole?
74367
Newtonian mechanics: massless particles
107504
Why does reduced mass help when talking about two body problems?