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Lift force is defined as the force exerted by a flowing fluid on a solid body
- a)in the direction of flow
- b)perpendicular to the direction of flow
- c)at any direction of flow
- d)none of the above
Correct answer is option 'B'. Can you explain this answer?
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Lift force is defined as the force exerted by a flowing fluid on a sol...
Understanding Lift Force
Lift force is a critical concept in fluid mechanics, particularly in the fields of aerodynamics and hydrodynamics. It is the force that acts on a solid body immersed in a flowing fluid, such as air or water.
Definition of Lift Force
- Lift force is defined as the force exerted by a flowing fluid on a solid body perpendicular to the direction of flow.
Why Perpendicular?
- The nature of fluid flow creates differences in pressure around the solid body, which results in lift.
- For example, in an airplane wing, the shape (airfoil) causes air to move faster over the top surface than the bottom, creating lower pressure above the wing and higher pressure below it.
- This pressure difference generates an upward lift force.
Implications in Engineering
- Understanding lift is crucial for designing structures like bridges, aircraft, and boats.
- Engineers must calculate lift forces to ensure stability and performance under various flow conditions.
Conclusion
- Therefore, the correct answer to the question about lift force is option B: it acts perpendicular to the direction of flow. This fundamental principle is essential for predicting how solid bodies interact with fluid environments.
Lift force is a critical concept in fluid mechanics, particularly in the fields of aerodynamics and hydrodynamics. It is the force that acts on a solid body immersed in a flowing fluid, such as air or water.
Definition of Lift Force
- Lift force is defined as the force exerted by a flowing fluid on a solid body perpendicular to the direction of flow.
Why Perpendicular?
- The nature of fluid flow creates differences in pressure around the solid body, which results in lift.
- For example, in an airplane wing, the shape (airfoil) causes air to move faster over the top surface than the bottom, creating lower pressure above the wing and higher pressure below it.
- This pressure difference generates an upward lift force.
Implications in Engineering
- Understanding lift is crucial for designing structures like bridges, aircraft, and boats.
- Engineers must calculate lift forces to ensure stability and performance under various flow conditions.
Conclusion
- Therefore, the correct answer to the question about lift force is option B: it acts perpendicular to the direction of flow. This fundamental principle is essential for predicting how solid bodies interact with fluid environments.
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Lift force is defined as the force exerted by a flowing fluid on a solid bodya)in the direction of flowb)perpendicular to the direction of flowc)at any direction of flowd)none of the aboveCorrect answer is option 'B'. Can you explain this answer?
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