Question about gravity

OmegaGuy · Post by **OmegaGuy** » 2006-03-18 03:45am

Now I had assumed that if there was a living creature, say it weights 150 pounds, that existed in 100 times earth gravity, its weight would be 15,000 pounds. However, someone stated that to that creature, it would be like having millions of tons all over its body, because the atmosphere would be heavier too. I suppose that makes sense, but is it right? And is there any way to calculate how much weight that creature would have to carry around?

Sriad · Post by **Sriad** » 2006-03-18 04:00am

No, displacement of fluids (air, water, whatever) happens evenly through the entire body; there is just as much pressure pushing up on the bottom/sides of Creature as there is on his top.

If he's under crushing pressure, he's fucked regardless but his weight will be the same if he's in a vacuum or at the bottom of the ocean.*

*as long as he isn't bouyent.

OmegaGuy · Post by **OmegaGuy** » 2006-03-18 04:14am

Okay thanks

Sriad · Post by **Sriad** » 2006-03-18 03:40pm

Sriad wrote:...his weight will be the same if he's in a vacuum or at the bottom of the ocean.*

*as long as he isn't bouyent.

Actually my physics re: bouyency is fairly weak so I slipped up a bit. His weight will always be reduced=to the fluid he displaces, so if the athmosphere were very dense he would seem to weigh LESS even though mass of course is the same; also there would be more work involved with moving around. See: walking in the shallow end of a swimming pool.

In an athmosphere denser than he is, he'd pop up to an athmospheric layer of neutral bouyency like a ball held on the bottom of same pool.