Invariant mass

Day 5,620, 07:36 • Published in North Korea Serbia • by An Jung geun

Hi,

Do you know why the invariant mass can't be negative ?

(I am searching on Google and I don't understand it/find an answer for it so if you can help me write it in comments please or send pictures/links that can help with it.)

Here an exemple of consequence of a potential existence of the negative mass using equations in wikipedia :



Fn=m*g*cos(θ)

If m is the only negative value then Fn is negative.

W=m*g

If m is the only negative value then W is negative.

Fr=[d(mv)]/dt

... Here I need help too because I don't know how if v increase😁 ... But I consider that Fr is small.

With this settings the object will not goes from top to bottom over time but from botton to top over time.

(Source : Wikipedia)

Have a good day.

An Jung geun