Part 3/6:
To illustrate the principles at work, let’s draw a simple diagram of an object submerged in a fluid. The pressures acting on the object differ based on their height. There is a greater pressure at the bottom of the object than at the top due to the weight of the fluid above it. This difference in pressure results in a net upward force.
In a static fluid, the pressure can be mathematically defined as force per unit area. To analyze the forces, consider defining the forces acting on a submerged object, illustrating how the upward force (buoyant force) equals the difference between the pressure at the bottom and the pressure at the top, multiplied by the cross-sectional area of the object.