What Is Archimedes' Principle?
An important principle of hydrostatics, it is pointed out that an object immersed in a stationary fluid is subjected to a buoyant force that is equal to the weight of the fluid discharged by the object, the direction is vertical and passes through the centroid of the discharged fluid. This conclusion was first put forward by Archimedes, hence the name Archimedes' principle. The conclusion is also true for objects partially immersed in liquid. The same conclusion can be extended to gases.
- An object immersed in a stationary fluid (gas or liquid) is subjected to a buoyant force that is equal to
- The Archimedes principle applies to objects that are fully or partially immersed in a stationary fluid, and requires that the lower surface of the object be in contact with the fluid (Figure 1).
- If the lower surface of the object is not all in contact with the fluid, such as a bridge pier submerged in water, a sunken ship inserted into the bottom of the sea, a pile driven into the bottom of the lake, etc., in this case, the force of the water is not equal to that in the principle. Prescribed force.
- If water is clearly relative to the object
Archimedes's Balloon
- The Archimedes principle can be used to explain the balloon's ascent mechanism: a balloon filled with light gas has a weight less than the weight (buoyancy) of the air it expels.
Archimedes' Law Hydrometer
- For a hydrometer that is partially immersed in a liquid, the buoyancy it is subjected to: F = W = V .
- In the formula, W is the weight of the hydrometer, V is the volume immersed in the liquid, and is the specific gravity of the liquid. If W and V are known, the specific gravity can be determined.
Archimedes's Law Displacement
- V max = m boat / water
- From = 1, V max = m ship / 1
- Shorthand: V = m
- That is, the volume constant is equal to the mass constant. Collectively called displacement.
Archimedes' Law Cumulus Convection
- Archimedes's static buoyancy enables the development of cumulus convection, which can generate gravitational internal waves in a stable stratified atmosphere. [4]