What is buoyant force?

Buoyant force is a fundamental principle in fluid mechanics that describes the upward force exerted on an object submerged in a fluid, such as a liquid or gas. This force is a result of the pressure difference between the top and bottom of the submerged object, and it acts in the opposite direction to the force of gravity. The concept of buoyant force was first discovered by the ancient Greek mathematician and inventor Archimedes and is now known as "Archimedes' principle."

The buoyant force can be understood using the following key points:

1. Pressure in a Fluid: In a fluid, such as a liquid or gas, pressure is exerted in all directions. The pressure increases with depth because of the weight of the fluid above it. At any point within the fluid, the pressure is higher at the bottom and lower at the top due to the weight of the fluid column above.

2. Archimedes' Principle: Archimedes' ______ __________ ____ ____ _______ __________.
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