Editing Submersible (section)

===Buoyancy===
{{Main|Buoyancy}}
When an object is immersed in a liquid, it displaces  the liquid, pushing it out of the way. 

Once the object is partially immersed, pressure forces exerted on the immersed parts are equal to the weight of water displaced, Consequently, objects submerged in liquids appear to weigh less due to this buoyant force. The relationship between the amount of liquid displaced and the resulting up-thrust is known as [[Archimedes' principle]], which states:

"when an object is wholly or partially immersed in a liquid, the up-thrust it receives is equal to the weight of the liquid displaced."{{cn|date=February 2024}}

Buoyancy and weight determine whether an object floats or sinks in a liquid. The relative magnitudes of weight and buoyancy determine the outcome, leading to three possible scenarios.

'''Negative Buoyancy:''' when the weight of an object is greater than the up-thrust it experiences due to the weight of the liquid displaced, the object sinks.

'''Neutral Buoyancy:''' if the weight of an object equals the up-thrust, the object remains stable in its current position, neither sinking or floating.

'''Positive Buoyancy:''' when the weight of an object is less than the up-thrust, the object rises and floats. As it reaches the liquid's surface, It partly emerges from the liquid, reducing the weight of the displaced liquid and, consequently, the up-thrust. Eventually, the reduced up-thrust balances the weight of the object, allowing it to float in a state of equilibrium.