Centrifuges do not weigh more when spinning; their mass and weight remain constant. The discussion clarifies that while spinning increases total stress-energy-momentum, the change in weight is negligible. Gyroscopes also do not lose mass when they spin; they resist tilting rather than gravity. The experiments conducted by Laithwaite, who contributed to maglev technology, indicated a reduced weight under specific conditions, but this effect is primarily aerodynamic and would not occur in a vacuum.
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Not strictly correct. When spun up there is greater total stress-energy-momentum = rest energy + rotational KE + other terms, and gravity acts on the sum of these. Will be a tiny addition, but is there.holtto said:its mass does not change, neither does its weight.
His experiments did show a reduced weight! However it can be explained aerodynamically, and if he had performed those experiments in a vacuum, nothing would have shown. Laithwaite had something in common with Thomas Gold. Both had strokes of genius thinking in certain directions, but goofed really badly in others.also, gyroscopes do not lose mass when they spin, contrary to what Laithwaite said. they don't resist gravity. they resist tilting.
and that guy invented maglev by the way.