Buoyancy

If a body is dipped into a liquid substance, it is affected by pressure from all sides (see picture below). The forces acting from the sides are all equally strong because they all act equidistantly from the liquid level. Because of the fact that the lateral forces cancel each other out, we do not have to consider them anymore in our further reflections.

The pressure in a liquid substance increases with depth and depends on the density of the liquid substance. The denser the liquid substance the more the pressure increases with depth. It is also important to know that the pressure at a certain point in the liquid substance is equal in each direction (the equal force per unit of area acts both downwardly, upwardly and laterally). The pressure on a body in a liquid substance always acts perpendicularly to the surface of the body.