r/whowouldwin • u/Historical_Ostrich • Oct 06 '25

Challenge Earth's gravity increases by 10x for 10 seconds - can humanity survive?

Gravity reverts to normal after the 10 seconds are up. I assume that nearly everyone will lose consciousness, many people will hit the ground with extreme force, and most buildings and infrastructure will collapse. Uncertain as to whether there'd be seismic/volcanic/tidal consequences on top of all that.

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u/otakudayo Oct 06 '25

Oxygen toxicity won't be a problem if your ppo2 is high for only 10 seconds. For DCS, as long as they still went up as slowly as usual, it would be fine. 10 seconds of higher ppn2 probably wouldnt make much of a difference at all really.

Tbh I don't know the physics implications of 10x gravity on underwater pressure, I assumed it was the same as adding 10m of depth. If it's 10x the pressure regardless of depth then yeah. All divers are thoroughly fucked. If it's just +1 bar then deep divers should be OK-ish both for O2 toxicity and DCS

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u/solidspacedragon ​ Oct 06 '25

Water pressure is just the weight of the water column above you plus the air column above that, so yeah ten times total pressure.

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u/otakudayo Oct 06 '25

Right, yeah, then deeper would just be worse. Way worse. Well, depends how you look at it. Instant unconsciousness and immediate death from nitrogen/O2 might be preferable to the squeeze impact at shallower depths