[Paul Copioli]

Ether,

Joe Johnson and I worked through this for two motors some time ago. Joe had a post on it back in either 2002 or 2003. His terminology and mine were different, but recently I made sure our two analysis methods came to the same conclusion. They did and yours matches our conclusions, but adds one more motor.

We did this analysis to try to kill the myth that you had to match free speeds. Joe went into detail about loading conditions that will cause one motor to actually be pushing the other, therefore the slower motor would contribute negative work to the system. Again, your analysis corroborates our conclusions back then.

I attached my hand calculations to prove Joe and my analysis methods were the same. I now use Joe's terminology because it is easier to put in Excel.

Paul