4 ms·
Mass is scalar and therefore is invariant. "Increasing mass" inevitably leads to so-called "perpendicular mass" which must change and "proper" mass which must
by adobriyan 16y ago
Mass is scalar and therefore is invariant.
"Increasing mass" inevitably leads to so-called "perpendicular mass" which must change and "proper" mass which must not change for equations of motion to stay correct.
This "perpendicular" mass is unphysical.
It's better to leave this concept.
- ars 16y agoI've never heard of perpendicular mass, I tried googling for that and nothing came up. Rest mass is invariant, but the real mass, i.e. the one that makes it harder to accelerate, and that gives inertia, is not.