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So if we have airships couldn't we have floating cities using the same techniques?
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Question
- Thread starter leichendame
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Think about how much a floating city would weigh. Also, wrong section.
krios41
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i think we don't have them for the very same reason we don't have them IRL
also
Bioshock infinite much?
Gabauchi
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a city that is floating would weigh nothing or less than nothing
krios41
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BTrooper19
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What if the balloons are big enough and it's like a shanty town.
As I said, this question is more suited to Lore Q&A
You would have to have a large enough balloon.
I'll try and just give the very basic physics involved:
So, first things first, you need to get past the force of gravity on the city. Basic F=ma kinda stuff.
So you need to provide a force that is large enough to equal that due to gravity. You suggest balloons. Ok, so basically:
F(balloon)=-ma , or opposite gravity.
So we're done right? Not quite. There's one last thing that comes into play with this simple model: tension. The balloons need to be tied down with something, so that something will be doing all the heavy lifting basically.
Basically same F=ma stuff.
So to sum up, a floating city isn't very viable, as the equipment used to support it would be able to handle the mass of the city without using impossibly strong "somethings" and balloons.
You could also use this same situation to explain why tying a bunch of balloons to your baby brother isn't going to make them fly away anytime soon. He, like the city, weights too much for the strings on the balloons to handle it.
I'll try and just give the very basic physics involved:
So, first things first, you need to get past the force of gravity on the city. Basic F=ma kinda stuff.
So you need to provide a force that is large enough to equal that due to gravity. You suggest balloons. Ok, so basically:
F(balloon)=-ma , or opposite gravity.
So we're done right? Not quite. There's one last thing that comes into play with this simple model: tension. The balloons need to be tied down with something, so that something will be doing all the heavy lifting basically.
Basically same F=ma stuff.
So to sum up, a floating city isn't very viable, as the equipment used to support it would be able to handle the mass of the city without using impossibly strong "somethings" and balloons.
You could also use this same situation to explain why tying a bunch of balloons to your baby brother isn't going to make them fly away anytime soon. He, like the city, weights too much for the strings on the balloons to handle it.
a city that is floating would weigh nothing or less than nothing
BenRekt
Chopper Gunner
We have airballons in real life, that doesn't mean we can make floating cities
Never confuse density with mass. You will fail your science exams because of it.
leafnosedbat
juice thought.
While a floating city isn't really feasible without magic (though there was some, probably now scrapped, Elven thing that seemed to have that kind of magic), nothing's stopping your faction from being a big airship.
