HMMM....so we are right back to what the orignal question was and instead of echoing what has been posted i'll try again.
Yes, one can calculate, but one must be aware of what and how the calculations are made and what they are telling them based on
varying inputs.
In practical applications one defines an acceleration desired and finds what is required to achieve it …or … accepts the value based on some other parameters.
That said, if one has all of the information required they could use one of the computer programs to calculate / evaluate a system. The problem is that unless
the data is very close to what the program uses for information and comparison ( motor / drive system ) you will just be playing with numbers. The manufactures
programs provide a motor choice to fit the conditions, but in the end only actual testing ( motor tuning ) confirms the reliablility. The three M's all interelated.
Maybe try out one of the programs and see if you really have the data and understanding required.
Have fun,
RICH