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Sreeshan · 2024-01-16T11:14:49.940Z

What is Buoyancy? • In fluids, pressure increases with depth due to the weight of the overlying fluid. When an object is submerged, the pressure at the bottom of the object is greater than the pressure at the top. This pressure difference creates an upward force known as the buoyant force. Archimedes's principle • This principle states that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object. In simpler terms, if an object displaces more fluid, it experiences a greater buoyant force, making it more likely to float. Factors affecting Buoyancy • Density: Buoyancy depends on the density of both the object and the fluid. An object with a lower density than the fluid will experience a greater buoyant force and float, while an object with a higher density will sink. • Volume: The volume of the fluid displaced also plays a role. A larger volume of displaced fluid leads to a larger buoyant force. • Gravity: The strength of gravity affects the weight of the displaced fluid and, consequently, the buoyant force. In weaker gravitational fields, objects experience less weight and a greater buoyant force, making them easier to float. Real-life examples of Buoyancy • Ships: Ships float because their large hulls displace a large volume of water, generating a buoyant force that exceeds their weight. • Submarines: Submarines can control their buoyancy by adjusting the ballast tanks. Filling the tanks with water increases their weight and allows them to dive, while emptying them reduces their weight and makes them rise. • Hot air balloons: Hot air balloons float because the heated air inside is less dense than the surrounding air, creating a buoyant force that lifts the balloon.

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Sreeshan

Jan 16

Buoyancy and Archimedes's principle

in Sreeshan

What is Buoyancy?

In fluids, pressure increases with depth due to the weight of the overlying fluid. When an object is submerged, the pressure at the bottom of the object is greater than the pressure at the top. This pressure difference creates an upward force known as the buoyant force.

Archimedes's principle

Factors affecting Buoyancy

Real-life examples of Buoyancy

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