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Non of you mentioned about moving object, so you don't understand of need that E=mc2.20N is static G.force and you already know it hard to handle, it becomes harder if you move it around the models, in short, you'll need to spend more force or your ENERGY to keep it right in moving not drop it to floor.Above formula of A.E tells the relationship among mass, moving speed and energy not energy alone as you thought.
Sure, you win...
back to Zeiss shall we?
BTW, just so you know, there is no such thing as a static G-Force., look it up. Also, energy is not a force, different things.
Anyhow, believe whatever you want..