F=ma

[1100f]

The dm/dt term does not imply an increase (or decrease) in mass, it does unambiguously define a mass flow rate.
Geistkiesel​

Wrong.
An expression like dm/dt is just a rate of change of the mass.
A mass flow rate mus include a grad(m) term.

 

[Tom2]

The dm/dt term does not imply an increase (or decrease) in mass, it does unambiguously define a mass flow rate.

Well, a mass flow across a system boundary is the very definition of increase or decrease in mass, depending on which way the flow is headed. So Anders is correct, if imprecise.

A mass flow rate mus include a grad(m) term.

Eh? Under what circumstances? Since you made this post I've looked up "mass flow rate" on a number of reputable sites, and they all say that it is simply m-dot. Could you perhaps be thinking of the continuity equation? If yes, then it must include a divergence term, not a gradient term.

 

[geistkiesel]

Wrong.
An expression like dm/dt is just a rate of change of the mass.
A mass flow rate mus include a grad(m) term.

1100f,
Good to hear from you again. I stand corrected. I was speculating a tad there. I am publishing some quantum heresy.
I would like your input. However, it is heresy of sorts.
Geistkiesel

 

[AndersHermansson]

The dm/dt term does not imply an increase (or decrease) in mass, it does unambiguously define a mass flow rate.
Geistkiesel​

You're funny