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Bodies in flotation to be in stable equilibrium, the necessary and sufficient condition is that the centre of gravity is located below the……………….. 
  • a)
    Metacentre
  • b)
    Centre of pressure
  • c)
    Centre of gravity
  • d)
    Centre of buoyancy
Correct answer is option 'A'. Can you explain this answer?
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Stable Equilibrium in Flotation Bodies

Flotation is the process of an object or a body floating on a liquid surface, typically water. When a body is in a state of stable equilibrium in flotation, it means that it remains balanced and does not tip over or capsize. In order for a body to achieve stable equilibrium in flotation, the center of gravity must be located below the metacentre.

Understanding the Terms

1. Center of Gravity (CG): The center of gravity of a body is the point at which the entire weight of the body can be considered to act. It is the average position of the weight distribution.

2. Metacentre (M): The metacentre is the point at which the vertical line passing through the center of buoyancy (CB) intersects with the vertical line passing through the original center of gravity (OG) of the body.

3. Center of Buoyancy (CB): The center of buoyancy is the centroid of the displaced volume of fluid when a body is submerged or partially submerged in a fluid.

Stable Equilibrium Condition

For a body to be in stable equilibrium in flotation, the center of gravity (CG) must be located below the metacentre (M). This condition ensures that the body remains stable and does not tip over or capsize.

If the center of gravity is above the metacentre, the body will have a tendency to overturn and lose stability. This is because any disturbance or inclination will create a moment that will cause the body to rotate further, leading to instability.

On the other hand, if the center of gravity is below the metacentre, the body will have a tendency to return to its original position when disturbed. This is because any inclination will create a moment that will cause the body to rotate back to its stable position.

Importance of Stable Equilibrium

Achieving stable equilibrium is crucial in flotation bodies, such as ships and boats, as it ensures their stability and safety. If the center of gravity is not below the metacentre, the body can capsize or become unstable, leading to potential accidents or damage.

Therefore, it is essential to design and construct flotation bodies in such a way that the center of gravity is positioned below the metacentre. This can be achieved through proper weight distribution, ballasting, and design considerations.

Conclusion

In conclusion, the necessary and sufficient condition for a body to be in stable equilibrium in flotation is that the center of gravity is located below the metacentre. This ensures that the body remains stable, balanced, and does not tip over or capsize. Achieving stable equilibrium is crucial for the safety and stability of flotation bodies.
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Bodies in flotation to be in stable equilibrium, the necessary and sufficient condition is that the centre of gravity is located below the………………..a)Metacentreb)Centre of pressurec)Centre of gravityd)Centre of buoyancyCorrect answer is option 'A'. Can you explain this answer?
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