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Buoyancy & Floatation Metacentre Video Lecture | Fluid Mechanics for Mechanical Engineering
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56 videos|104 docs|75 tests
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FAQs on Buoyancy & Floatation Metacentre Video Lecture - Fluid Mechanics for Mechanical Engineering
| 1. What is buoyancy and how does it relate to floatation? |  |
Ans. Buoyancy is the upward force exerted on an object submerged in a fluid, such as water or air. It is directly related to the weight of the fluid displaced by the object. Floatation, on the other hand, is the ability of an object to remain on the surface of a fluid without sinking. The concept of buoyancy is crucial in determining whether an object will sink or float.
| 2. How is the metacentre related to buoyancy and floatation? | |
Ans. The metacentre is an important concept in the study of buoyancy and floatation. It refers to the point of intersection between the vertical line passing through the center of buoyancy and the vertical line passing through the center of gravity of a floating object. The position of the metacentre determines the stability of the object. If the metacentre is above the center of gravity, the object is stable. If the metacentre is below the center of gravity, the object is unstable and prone to capsizing.
| 3. How can the metacentric height affect the stability of a floating object? | |
Ans. The metacentric height is the distance between the metacentre and the center of gravity of a floating object. It plays a crucial role in determining the stability of the object. A higher metacentric height indicates greater stability, as it means the metacentre is positioned higher above the center of gravity. On the other hand, a lower metacentric height leads to decreased stability and increases the risk of capsizing.
| 4. What factors can affect the buoyancy and floatation of an object? | |
Ans. Several factors can influence the buoyancy and floatation of an object. The volume of the object, or the amount of fluid it displaces, directly affects the buoyant force. The density of the fluid, as well as the density of the object itself, also play a role. Additionally, the shape and size of the object can impact its ability to float. Objects with a larger surface area relative to their volume are more likely to float compared to objects with a smaller surface area.
| 5. Can an object have negative buoyancy? | |
Ans. Yes, an object can have negative buoyancy. Negative buoyancy occurs when the weight of an object is greater than the buoyant force acting on it. This causes the object to sink rather than float. Objects with a density greater than the density of the fluid they are submerged in will have negative buoyancy.
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Nov 15, 2024 Last updated |
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