Buoyancy is the upward force exerted by a fluid on an object immersed in it. This happens because pressure increases with depth, so the bottom of the object experiences more pressure than the top.
Definition: Buoyancy is the upward force that a fluid exerts on a body immersed in it.
The amount of this force depends on the volume of the fluid displaced by the object. This is why large ships can float even if they are very heavy.
Formula: Buoyant Force (FB) = ρ × g × V
where ρ = fluid density, g = gravity, V = displaced volume
where ρ = fluid density, g = gravity, V = displaced volume
If FB > Weight of object, it floats. If FB < Weight, it sinks. If FB = Weight, it stays suspended.
🌊 Real Life: Icebergs float because ice is less dense than seawater. Hot air balloons rise due to buoyancy in air!
❄ Ice floats because it's less dense than water. Only 10% of an iceberg is visible above the surface!
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