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The CORRECT statement about buoyancy force is
- a)it always acts vertically upwards
- b)it is equal to weight of fluid displaced by solid body
- c)it acts through the centre of gravity of displaced volume
- d)none of the above
Correct answer is option 'A,B,C'. Can you explain this answer?
Most Upvoted Answer
The CORRECT statement about buoyancy force isa)it always acts vertical...
Understanding Buoyancy Force
Buoyancy is a fundamental concept in fluid mechanics, crucial for understanding how objects behave when submerged in a fluid. The following points explain why options A, B, and C are correct regarding buoyancy force.
1. Buoyancy Force Acts Vertically Upwards
- The buoyancy force always acts in the opposite direction to gravity, which means it acts vertically upwards.
- This upward force arises due to the pressure difference between the bottom and top of the submerged object, causing it to rise or float.
2. Equal to Weight of Fluid Displaced
- According to Archimedes’ principle, the buoyancy force on an object submerged in a fluid is equal to the weight of the fluid that the object displaces.
- This means if an object displaces a certain volume of fluid, the buoyant force acting on it will equal the weight of that displaced fluid.
3. Acts Through the Centre of Buoyancy
- Although the buoyant force is equal to the weight of the displaced fluid, it acts through a specific point known as the centre of buoyancy.
- The centre of buoyancy is the centroid of the displaced volume and is crucial for determining the stability of floating objects.
Conclusion
In summary, the buoyancy force is characterized by its upward direction (Option A), its equivalence to the weight of the displaced fluid (Option B), and its action through the centre of buoyancy related to the displaced volume (Option C). Hence, all three statements are correct, providing a comprehensive understanding of buoyancy forces in fluid mechanics.
Buoyancy is a fundamental concept in fluid mechanics, crucial for understanding how objects behave when submerged in a fluid. The following points explain why options A, B, and C are correct regarding buoyancy force.
1. Buoyancy Force Acts Vertically Upwards
- The buoyancy force always acts in the opposite direction to gravity, which means it acts vertically upwards.
- This upward force arises due to the pressure difference between the bottom and top of the submerged object, causing it to rise or float.
2. Equal to Weight of Fluid Displaced
- According to Archimedes’ principle, the buoyancy force on an object submerged in a fluid is equal to the weight of the fluid that the object displaces.
- This means if an object displaces a certain volume of fluid, the buoyant force acting on it will equal the weight of that displaced fluid.
3. Acts Through the Centre of Buoyancy
- Although the buoyant force is equal to the weight of the displaced fluid, it acts through a specific point known as the centre of buoyancy.
- The centre of buoyancy is the centroid of the displaced volume and is crucial for determining the stability of floating objects.
Conclusion
In summary, the buoyancy force is characterized by its upward direction (Option A), its equivalence to the weight of the displaced fluid (Option B), and its action through the centre of buoyancy related to the displaced volume (Option C). Hence, all three statements are correct, providing a comprehensive understanding of buoyancy forces in fluid mechanics.
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The CORRECT statement about buoyancy force isa)it always acts vertical...
All the statements given above about buoyancy are correct.
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The CORRECT statement about buoyancy force isa)it always acts vertically upwardsb)it is equal to weight of fluid displaced by solid bodyc)it acts through the centre of gravity of displaced volumed)none of the aboveCorrect answer is option 'A,B,C'. Can you explain this answer?
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