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Buoyancy & Centre of Buoyancy Video Lecture | Fluid Mechanics for Mechanical Engineering

FAQs on Buoyancy & Centre of Buoyancy Video Lecture - Fluid Mechanics for Mechanical Engineering

1. What is buoyancy?

Ans. Buoyancy is the upward force exerted by a fluid, such as water or air, that opposes the weight of an object submerged or partially submerged in it. It is caused by differences in pressure between the top and bottom of the object, resulting in a net force pushing the object upwards.

2. How is buoyancy calculated?

Ans. Buoyancy is calculated using Archimedes' principle, which states that the buoyant force on an object is equal to the weight of the fluid displaced by the object. To calculate buoyancy, you need to determine the weight of the fluid displaced by the object and subtract it from the weight of the object itself.

3. What is the center of buoyancy?

Ans. The center of buoyancy is the point at which the buoyant force acts on an object. It is the center of mass of the displaced fluid. In simple terms, it is the average position of the fluid that is pushing the object upwards. The center of buoyancy can change as the object tilts or moves within the fluid.

4. How does the shape of an object affect its buoyancy?

Ans. The shape of an object affects its buoyancy because it determines the volume of fluid that the object displaces. Objects with larger volumes will displace more fluid and experience a greater buoyant force. Similarly, objects with irregular shapes may displace varying amounts of fluid, leading to changes in buoyancy.

5. Does the density of an object affect its buoyancy?

Ans. Yes, the density of an object affects its buoyancy. An object with a higher density than the fluid it is submerged in will sink, as the weight of the object is greater than the buoyant force. On the other hand, an object with a lower density than the fluid will float, as the buoyant force exceeds the weight of the object. The relative densities of the object and fluid determine the buoyancy.

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Sep 04, 2025 Last updated

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	Fluid Mechanics for Mechanical Engineering 56 videos\|154 docs\|75 tests

Fluid Mechanics for Mechanical Engineering

56 videos|154 docs|75 tests

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