# Elevators in Reversed Gravitation

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How do you make an elevator on a planet with reversed gravitation? Let me explain. Let's say that gravity was reversed, and a person could stand upside-down on the ceiling. Then there was an elevator that went DOWN. Would the person be upside-down as they are riding the elevator? They would have to jump off before they reached the end or the force of the elevator would be pushing them toward the floor, right? But wouldn't jumping off the elevator cause them to float back to the ceiling? The only exception I can think of is if the person had something to grab onto, but pulling yourself DOWN onto a ledge would probably be difficult in real life. Well, it will be interesting to hear your thoughts on this [smile].

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I would imagine if you had an elevator in reverse gravity it would work just like elevators here on earth except upside down.

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Indeed, as SiCrane said, it would work exactly the same...

The person would walk from thier position upside down on the ceiling of the room to the ceiling of the elevator (may require climbing over a ledge if the elevator has been designed for normal gravity - if gravity were always inverse it would be designed to deal with it), and then would travel down (which would be up from thier perspective really), and get out onto the ceiling of the room of the lower level.

See, no issue.

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Elevators work using a cable. So if the gravaity is suddenly reversed, the elevators won't work, since cables can only pull, not push.

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Sounds interesting. I suppose the elevator cable would be bolted to the surface and pull the elevator toward the ground. Other than that, it would be exactly the same.

I would be more interested in knowing how to build an elevator in reversed gravity. Or the building itself. Talk about hazardous work. One slip and you fall into the sky. In fact, how exactly does the planet itself stay together with such physics? :P

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Quote:
 Original post by someboddyElevators work using a cable. So if the gravaity is suddenly reversed, the elevators won't work, since cables can only pull, not push.

Cables can't pull, either. They just sit there and do nothing. As I understand elevator mechanics, the actual work is performed by a motor and a large counter weight. With minor modifications, I can easily see a cable elevator being usable in both 'normal' and 'reverse' gravity with no fundemental changes to how the elevator operates.

Obviously, if gravity on earth just suddenly toggled, elevators would be out of commision. But that's just because we have no reason to design for that particular circumstance...presumably, engineers in this alternate reality do have to consider this and will design their elevators accordingly.

CM

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We know that all matter pulls other matter. Now, what about using anti matter. In the real life, anti matter destroys matter on impact. I the game, however, the diffrance between matter and anti matter will be with gravity. Matter and matter will pull each other. Matter and anti matter will push each other. Anti matter and anti matter will pull each other. Think about it as reversed magnets.

If you want to build a matter building on the surface of an anti mater planet, you will have to use strong hooks. Another way is to charge a heavier than the building anti matter mass with a strong magnetic charge, and another mass made out of matter with an opposite charge. The matter magnet will be attached with the building, and the anti matter magnet will be attached to the planet. The two magnets will be attached to each other, and the bulding will stay on the planets surface.

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Quote:
 Original post by someboddyIf you want to build a matter building on the surface of an anti mater planet, you will have to use strong hooks.

But what do you build the hooks out of?

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The hooks can be built out of matter. Since they are inserted into the anti matter, they are being pushed from all sides, and stay in rest.

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Yeah, that would work, but how do you get the hooks in there? And why wouldn't the forces just rip the hook out? You'd have to augur into the anti-planet's core and set a foundation, but how would you get there? You'd need a vehicle made out of 50% matter and 50% anti-matter, so it could fly up there in zero-G and drill the hole, then use the same 50-50 alloy for the hooks. That would be the way to go.

Also, wouldn't the anti-gravity become greater the closer you got to the surface? Depending on te distances you're handling, the counterweight on the elevator could get screwed up pretty badly by being too far from the surface. I think the 50/50 matter/anti-matter alloy would be the ideal solution for just about every problem you'd encounter. If everything was composed of that stuff, the only real effects would be on the characters, which is probably the whole point.

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