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The force exerted by a static fluid on a surface either plane or curved, when the fluid comes in the contact with surface is called:
- a)Total pressure
- b)Centre of pressure
- c)Normal pressure
- d)Pressure density
Correct answer is option 'A'. Can you explain this answer?
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The force exerted by a static fluid on a surface either plane or curve...
Concept:
Hydrostatic Forces:
Hydrostatic Forces:
- Fluid statics or hydrostatics is the branch of fluid mechanics in which stresses generated in a fluid system are determined when it is at rest or static condition.
- The force exerted by a static fluid on a surface either plane or curved, when the fluid comes in the contact with the surface is called Total pressure.
- The point of application of total hydrostatic force on the surface is known as the center of pressure.
Total Hydrostatic Force on a Horizontal Plane and inclined surface:
Consider a plane surface immersed in a static mass of liquid of specific weight γ, such that it is held in a horizontal position at a depth h below the free surface of the liquid and if the surface is in a vertical position such that the centroid of the surface is at depth of h̅ below the free surface. A is the area of the total surface, then the total hydrostatic force on the horizontal surface,
F = γAh̅
γh̅ is the pressure intensity at the centroid of the surface. Therefore, it can be stated that the total hydrostatic force on a plane surface is equal to the product of the surface area and the intensity of pressure at the centroid of the area.
Consider a plane surface immersed in a static mass of liquid of specific weight γ, such that it is held in a horizontal position at a depth h below the free surface of the liquid and if the surface is in a vertical position such that the centroid of the surface is at depth of h̅ below the free surface. A is the area of the total surface, then the total hydrostatic force on the horizontal surface,
F = γAh̅
γh̅ is the pressure intensity at the centroid of the surface. Therefore, it can be stated that the total hydrostatic force on a plane surface is equal to the product of the surface area and the intensity of pressure at the centroid of the area.
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The force exerted by a static fluid on a surface either plane or curve...
Understanding Total Pressure in Static Fluids
The force exerted by a static fluid on a surface, whether it is plane or curved, is commonly referred to as Total Pressure. Here’s a detailed explanation:
Definition of Total Pressure
- Total pressure is the cumulative force exerted by the fluid on a surface due to the weight of the fluid above it.
- This pressure results from the gravitational pull acting on the fluid, creating a pressure gradient from the surface of the fluid to the bottom.
Conceptual Basis
- In a static fluid, pressure increases with depth due to the weight of the fluid above.
- The total pressure on a surface is calculated by integrating the pressure over the area of the surface in contact with the fluid.
Importance in Civil Engineering
- Engineers must consider total pressure when designing structures such as dams, retaining walls, and underwater foundations.
- Understanding total pressure helps in predicting and managing potential structural failures caused by fluid forces.
Other Terms Explained
- Centre of Pressure: This refers to the point on a submerged surface where the resultant pressure force acts. It is essential for understanding how forces are distributed.
- Normal Pressure: This term describes the pressure exerted perpendicular to a surface but does not account for the total force over an area.
- Pressure Density: This is a measure of pressure per unit volume and is not directly related to the total force exerted by the fluid.
In summary, the total pressure is crucial in assessing the effects of static fluids on structures, making it a key concept in civil engineering.
The force exerted by a static fluid on a surface, whether it is plane or curved, is commonly referred to as Total Pressure. Here’s a detailed explanation:
Definition of Total Pressure
- Total pressure is the cumulative force exerted by the fluid on a surface due to the weight of the fluid above it.
- This pressure results from the gravitational pull acting on the fluid, creating a pressure gradient from the surface of the fluid to the bottom.
Conceptual Basis
- In a static fluid, pressure increases with depth due to the weight of the fluid above.
- The total pressure on a surface is calculated by integrating the pressure over the area of the surface in contact with the fluid.
Importance in Civil Engineering
- Engineers must consider total pressure when designing structures such as dams, retaining walls, and underwater foundations.
- Understanding total pressure helps in predicting and managing potential structural failures caused by fluid forces.
Other Terms Explained
- Centre of Pressure: This refers to the point on a submerged surface where the resultant pressure force acts. It is essential for understanding how forces are distributed.
- Normal Pressure: This term describes the pressure exerted perpendicular to a surface but does not account for the total force over an area.
- Pressure Density: This is a measure of pressure per unit volume and is not directly related to the total force exerted by the fluid.
In summary, the total pressure is crucial in assessing the effects of static fluids on structures, making it a key concept in civil engineering.
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