Like the ones in Dragonball,except, they would go from 1.5 to 8 g's or so. How long could a person stand 2 g's? How many g's before you collapse?
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The answer depends on orientation and amount of exposure, but I guess you're asking what's the maximum g-force a human could take indefinitely with freedom of movement. Some people are better than others, so there's not a clear answer. My guess would be 1.5 g's, but maybe 2 g's or a little more. Not sure.
Gravity cannot be manipulated with a flip of a switch like Goku has on his way to Namek (I used to watch this show). The only realistic way to have artificial gravity is to have a spinning centrifuge. The centripedal acceleration gives you the strength of artificial gravity: a = v^2 / r. The gravity is maximum at the edge of centrifuge, and decreases linearly as you "climb up" to the center, where it is zero. The thing about spinning spaceships for gravity is that the radius has to be decently big. If the effective spin radius is only twice as tall as you are, your head is experiencing half the gravity your feet are, and that would probably make you sick.
Dragonball Z makes the assumption that high gravity exercise makes you faster and stronger and a better fighter. It would make you stronger, assuming it was physiologically endurable, but maybe not faster and better. When astronauts went to the Moon (which has about a sixth of the gravity of Earth) they could lift more massive objects and jump higher, but in general they moved slower and clumsier, because it just wasn't possible to "walk" on the Moon as you would Earth. Of course DBZ is magic and sci-fi but just providing relevant commentary.
Gravity cannot be manipulated with a flip of a switch like Goku has on his way to Namek (I used to watch this show). The only realistic way to have artificial gravity is to have a spinning centrifuge. The centripedal acceleration gives you the strength of artificial gravity: a = v^2 / r. The gravity is maximum at the edge of centrifuge, and decreases linearly as you "climb up" to the center, where it is zero. The thing about spinning spaceships for gravity is that the radius has to be decently big. If the effective spin radius is only twice as tall as you are, your head is experiencing half the gravity your feet are, and that would probably make you sick.
Dragonball Z makes the assumption that high gravity exercise makes you faster and stronger and a better fighter. It would make you stronger, assuming it was physiologically endurable, but maybe not faster and better. When astronauts went to the Moon (which has about a sixth of the gravity of Earth) they could lift more massive objects and jump higher, but in general they moved slower and clumsier, because it just wasn't possible to "walk" on the Moon as you would Earth. Of course DBZ is magic and sci-fi but just providing relevant commentary.
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Anything too far above Earth's gravity is likely to cause internal organs to rupture under their own weight. I can only Imagine what 2x Earth's gravity would do to the brain or the strain it would put on the heart. Of course it's possible, just really really stupid.
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Ask NASA.
All those astronaut training sessions using a human centrifuge would have generated a lot of data over the years.
Lots of data would also be available on fighter pilots, including data using pressure suits to try to offset "G" forces.
All those astronaut training sessions using a human centrifuge would have generated a lot of data over the years.
Lots of data would also be available on fighter pilots, including data using pressure suits to try to offset "G" forces.