When you were in high school, you must have studied Archimedes' Laws of Physics. In Archimedes' law the following theory applies. An object that is immersed in a liquid either partially or completely will experience an upward force. The magnitude of this force will be equal to the weight of the fluid displaced.
Archimedes' law is written in the formula:
Fa = vg
Description:
Fa = upward force (N)
V = the volume of the submerged object (m3)
= density of the liquid (kg/m3)
g = acceleration due to gravity (N/kg)
According to Archimedes' law, an object immersed in a liquid experiences two forces. These two forces are gravity or gravity and the upward force of the liquid.
In everyday life we ??can see events related to the magnitude of these forces, namely floating, floating and sinking.
The concept of Drifting, Floating and Drowning
Archimedes' laws are also related to the concepts of floating, floating, and sinking. Remember this statement? The three concepts can be described as follows:
If an object has a density greater than the density of a liquid, the object will float, or vice versa.
If an object has the same density as the density of the liquid, the object will float.
If an object has a density greater than the mass of the liquid, the object will sink.
The size of the volume, mass and weight of objects will affect the concept of floating, floating and sinking.
You can find the concept of floating, sinking, and floating in the event of an egg that sinks when it is put in plain water. This is Archimedes' law.
The egg sinks because the weight of the egg is greater than the upward force by the water and the density of the egg is greater than the density of the liquid. What if you want the eggs not to sink?
So that the egg does not sink, then you must add salt to the water. Thus, the weight of the egg will be less than the upward force by the water and the density of the egg will also be smaller than the density of the water.
This is what causes the egg to not sink. Are there examples of the application of Archimedes' law to other events in everyday life. The answer, of course there is for example on ships, hydrometers, submarines, and others. Let's discuss them one by one.
Application of Archimedes' Law in Everyday Life
You can find Archimedes' law in a variety of tools, both simple and sophisticated equipment. Here are some examples of its application, such as:
1. Application of Archimedes' Law on Hot Air Balloons
You must have seen hot air balloons or karen balloons floating in the air. This gas balloon can float because it contains hydrogen or helium gas inside.
The density of hydrogen or helium is lighter than air. A very large gas balloon is called a hot air balloon. This hot air balloon can float because it contains gas which has a density less than the density of air.
The gas in this gas balloon is hot air. So, when a person wants his gas balloon to rise, he must add hot air to the balloon. When the hot air balloon has reached the desired height, it can reduce the hot air until the weight of the balloon is equal to the upward force.
If the gas balloon is to be lowered, then the hot air must be reduced so that the weight of the object becomes greater than the upward force. Thus, the nature of the gas balloon is the same as that of a liquid.
The greater the volume of air displaced, the greater the upward force. The amount of air volume depends on the size of the balloon itself.
2. Application of Archimedes' Law on Hydrometer
Hydrometer is a tool that is often used to measure the density or density of liquids. If the tool is immersed in water, then part of the tool will sink.
The greater the density of the water substance, the less part of the hydrometer will sink. This hydrometer is widely used to determine the amount of water content in milk, beer, or other beverages.
This hydrometer is made of a glass tube. In order for the glass tube to float and stand upright in the liquid, the bottom is given lead grains which function as a load.
The diameter of the bottom of the tube is designed to be larger with the aim that the volume of liquid transferred by the hydroether becomes larger. Thus, a greater upward force is generated, and the hydrometer floats in the liquid.
The stem of this glass tube is designed so that small changes in the weight of the object being moved can produce large changes in the depth of the tube immersed in the liquid. This means that the differences in reading on the scale become clearer.
3. Application of Archimedes' Law to Pontoon Bridges
Have you ever seen empty drums tied up in a row like a bridge? This is what is called a pontoon bridge. This bridge was built on the basis of the floating concept.
These drums must be tightly closed so that no water can enter through the drum openings. This bridge is usually used for various emergency purposes. If the tide is high, then this bridge will rise.
And vice versa, if the sea water recedes, the bridge will go down. The high or low of this bridge depends on the tides and low tides. Apart from this pontoon bridge, another example is a raft made of coconut tied together. That's the application of Archimedes' laws of physics to the Pontoon bridge.
4. Application of Archimedes' Law on Ships
If you put iron in a container filled with water, the iron will sink. But, why didn't a very large ocean liner sink? This is the answer. So that the ship does not sink, the ship must be made with a cavity or space.
This is intended so that the volume of seawater transferred by the ship becomes larger. Based on the equation that the buoyant force will be proportional to the volume of the liquid displaced, the buoyant force will be large. Well, this force can compare the weight of the ship so that the ship does not sink and remains afloat.
5. Application of Archimedes' Law on Submarines and Shipyards
Actually the working principle of shipyards and submarines is the same. When the submarine will dive, then enter the sea water into a special room with the aim that the weight of the ship will increase.
Setting a little or a lot of seawater that is included will cause the submarine to dive at a depth that is suitable for its purpose. If you want the submarine to float, then remove seawater from a special room so that the weight of the ship is reduced.
This submarine has a certain limit when diving according to the concept of hydrostatic pressure. If this submarine is at a depth that is too deep, then the ship can be destroyed due to the large hydrostatic pressure.
As with submarines, so do shipyards. If there is a ship to be repaired, the shipyard will be sunk and the ship is put in.
Then the shipyard will be floated to repair the damaged bottom of the ship. The sinking and floating of the shipyard is done by removing and entering seawater in a special room.
Those are some applications of Archimedes' Law of Physics in everyday life. Actually there are many more examples that we can find about this concept of Archimedes' law. Hope it is useful.