whenever there is something deep underwater like a submarine why does eventually the glass start breaking and why does water kinda lift things up for that matter?
In: Physics
Gravity. Water is heavy, and the deeper you are, the more water there is above you. All of that water has weight, so when you are deep, there is much more weight pushing down on you. This weight causes increased pressure on from every direction, eventually enough to crush things (like poorly constructed billionaire’s subs) that can’t hold up to that much pressure
When you’re further down, all the water above you is pushing down on you.
Buoyancy is a simple state of something being less dense than something else. A Feather would float on top of water; a piece of iron would sink, because one is less dense and the other is more dense than water. This is the “keeping it simple” version.
Cause it’s heavy. Same reason touching lugnuts and boards wouldn’t crush you but a building would. Water seems harmless until your underneath millions of tons of it. At least I think that’s how it works. If it’s not. Then explain to me, also like I’m five, why I’m wrong😅
1. Water is heavy, the more water over you the more weight is bearing down.
2. Water is dense, things that float have air in them and are less dense.
There’s air above you right now, stretching upwards into space. That air has a weight, and you’re always being squished downwards by it. This is atmospheric pressure, but we’re used to it.
Now imagine you’re underwater. If you’re under a little bit of water, the water above you doesn’t weigh that much. The deeper you go, though, the more water is above you and the more that water weighs. If you go really deep, it weighs enough that it can squish submarines.
It’s the weight of the water. The deeper you are, the more water their is on top of you and since water has weight, that creates pressure. Same thing with air, in fact. You’re under pressure right now because of the atmosphere.
Water lifting things depends on how close to the surface they are. Let’s say you jump in water and you notice you won’t sink? Well, dive down 10 meters (30 feet or so) and the opposite will start becoming true, you will start sinking deeper without effort.
Pressure is force/area. The force in this case is the weight of the water, as gravity is always acting on it. The deeper you go the more weight on the object=more force=more pressure. Eventually an object that cannot equalize the pressure with the outside water will implode.
Ever had multiple heavy blankets stacked on you?
Now imagine being able to move down through a stack of hundreds of thousands of blankets, with their weight adding up the farther you go down.
Same idea.
Ever had multiple heavy blankets stacked on you?
Now imagine being able to move down through a stack of hundreds of thousands of blankets, with their weight adding up the farther you go down.
Same idea.
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