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You can think of it this way:
Suppose a box block is inside a liquid;
Objects always have an upper and lower bar, and the effect of buoyancy is caused by the difference in pressure between the upper and lower levels.
The pressure difference between the upper and lower pressures depends on the area of the upper (lower) surface of the object and the pressure difference between the liquid at these two heights;
The pressure of the liquid at different depths depends on the density of the liquid and the difference between these two depths.
The depth difference is the height of the object.
In this way, buoyancy is related to the length, width and height of the object and the density of the liquid.
The analysis of irregular objects is much more complicated, but the principle is the same. Irregular objects can be broken down into an infinite number of small regular objects, or calculated with tools such as integration, and the final result is the existing buoyancy formula.
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Fluid has buoyancy, yes, there is pressure in the night, liquid pressure = LG, right? Knowing this, it is easy to explain, the buoyancy of physics in the water is actually a pressure of the water on him, that is, the pressure difference between different heights at night, pressure = pressure * area, you know, the whole force is completely used by the liquid, and the object is the force, and it has nothing to do with the object itself. F = G row is only applicable to the two states of suspension and floating.
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1.Because there is pressure in the liquid, and the effect of pressure is related to depth, there is a difference in the pressure on the upper and lower surfaces of the object, so the pressure also has a certain difference, and this difference is buoyancy.
2.Because of the results of Archimedes' experiments, isn't physics a discipline based on experiments? This is what it was to be proven to be realistic, and that's it. There doesn't seem to be a specific explanation for why.
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It is because of the pressure difference, so the pressure difference occurs.
Be. F objects do not necessarily = g rows, if they float, they are equal.
F float is equal to g row.
This is not fully explained by experiments.
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f g row is the volume of boiling water.
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According to Archimedes' law it is.
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G-row refers to the gravitational force of the object to expel the water, that is, the part of the volume of the object immersed in water, the gravity of the same volume of water as this volume.
This part of gravity is equal to the object's own gravity.
Row G = Row V x Density Here the density is the density of the water, and the mass is the mass of the water, which is the weight of the object.
For example, if it is immersed in half, the density of the object is half the density of water.
In this case, half is the volume (the volume immersed) * 2 times the density (the density of water) = the mass of the object.
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You're talking about Archimedes' law, where the g-row is the gravitational force of an object immersed in water to expel water, that is, the buoyancy of an object immersed in water.
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Row V refers to the volume of liquid discharged, and row G refers to the gravitational force exerted on this part of the liquid.
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G-row is the gravity of the water that is discharged, which is the gravity of the part of the water that is in the water.
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Solution: According to the laws of junior high school physics.
F float = g row.
That is, the buoyancy force f = the weight of the liquid discharged by the object, so that the buoyancy f and the weight g of the liquid constitute a pair of equilibrium forces.
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The object immersed in the liquid experiences an upward buoyant force equal to the gravitational force exerted by the liquid discharged by the object. This is the famous "Archimedees' law" (archimedes), also known as the Archimedes' principle, the buoyancy principle.
Mathematical expression: f float = g row = liquid (gas) ·g · v row.
Range: Liquid, Gas.
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The density of the object is less than the density of the solution.
F float = g row.
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