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The buoyancy of an object submerged in water does not normally change substantially with depth, but there are caveats to this answer.
The buoyant force is equal to the weight of fluid displaced.
In the case of non-compressible liquids the buoyancy force does not change with depth.
No material is truly incompressible, so if you go really deep (the bottom of the ocean for example), the fluid is compressed a little bit, and so a given volume of the fluid is heavier (denser) and the buoyancy force is greater. (The difference in the density of sea water between the surface and the greatest depth of the ocean is only a few percent.)
Buoyancy forces are also present in compressible gases, for example, a balloon in Earth's atmosphere. In this case, air closer to the Earth's surface is more compressed and thus significantly denser, meaning a fixed volume object will experience a noticeably greater buoyancy force at lower altitudes.
Finally, the buoyant force can change with depth because the volume of the object changes with depth. Certainly this is an important factor with balloons in air and if you submerged a balloon in water the effect of pressure on the volume of the balloon would be a dominant factor on buoyancy. This is present, though small, for solid objects as well.
One more thing, if you are being really picky, gravity changes with depth as well and so affects buoyancy. Obviously not important on Earth, but dropping a mass into a gas planet does have to incorporate the change of gravity with depth and all the other caveats mentioned above.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoBecause the buoyancy of an object is equal to the weight of the volume of fluid displaced, the buoyancy can change if the volume displaced changes or the weight of the fluid changes.
Examples:
If a balloon is submerged in water, the volume of the balloon gets smaller as the depth increases, thereby decreasing the buoyancy of the balloon.
The buoyancy of a swimmer is greater in sea water than in fresh water because sea water is more dense.
See related questions.
Wiki User
∙ 9y agoWhen an object is placed in a fluid, the upward force exert by fluid is known as buoyant force. It is equal to the weight of the fluid displaced by submerged body. When an object is starting entering into fluid, then more and more fluid is displacing and buoyant force increases. When object submerged fully, then buoyant force become constant.
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Are Personal Floation Divcess more buoyant in deep water?
No the depth of the water does not change buoyancy. Floating in salt water is easier than in freshwater.
Can you change you center of buoyancy?
You can change your center of buoyancy by adding weights to a different area.
Is buoyancy a physical or chemical change?
chemical change
Two ways to find the volume of a plastic cube?
find buoyancy and the height depth and with and you've got your answer
Is the bouyant force of water proportional to its depth?
No. Water is incompressible. Buoyancy is determined by density, and being incompressible the density stays the same. Once an object is submerged there's no more buoyancy to be generated.
What causes the buoyancy to increase or decrease?
Buoyancy force come from difference in density of the object and the surrounding. Buoyancy of the ship can change from the pay load inside its' space. More load per space reduce the buoyancy. For Balloon, buoyancy is change by increase temperature of gas inside to balloon since increase in temperature would cause gas to expand and had lesser density in its' cavity. In general, buoyancy increase or decrease by changing of density of the object or the surrounding medium.
What affect provided by water aerobics helps make the exercise beneficial?
Buoyancy
What are 2 ways to find the volume of a plastic cube?
multplying the hieght, depth and width is one way. another way is to find out what the buoyancy is
What is an air bladder?
An air bladder is an internal organ used by fish to control their buoyancy, which allows them to maintain or change depth depending on their density.
Which organ or structure in bony fish enables them to remain at a certain water depth without expending energy?
The many fins around their body. They also change their own buoyancy by sucking in air and pushing air out.
Does increase pressure in a tank increase its buoyancy?
no, it will not, in a compressible gas, the contents will increase in density, thus reducing its buoyancy. in an incompressible liquid or solid, no noticeable change will occur.
How does the density of water change with depth?
the density of sea increases with depth
