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What is this? Fool-him-day or is this magic time?
What were they on about with this scam? Because that's exactly what it was, a scam.
Their centers of gravity on the moon would be different from the earth's simulations, and the earth weights would be three or four times too high to reproduce lunar conditions.
However, the practice sessions would certainly have been useful in simulating
earth gravity conditions. Do you understand?
If Cunningham's backpack and spacesuit had weighed 185 pounds, he would have become totally exhausted in just a couple of minutes with a combined weight of 370 (+/-) pounds, but he was not. He was not.
Incredibly, his 1964 simulations involved space suit pressure. This implies that he
carried oxygen and some sort of cooling system, otherwise he would have quickly passed out from the heat exhaustion. A professional diver can tell you that's true.
All of this evidence points to the conclusion that the life support systems and spacesuits were light enough for the astronauts to have performed in high lunar gravity conditions for extended periods of time because they did it with the same equipment in earth gravity with no problem.