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The position of centre of pressure on a plane surface immersed vertically in a static mass of fluid is
- a)at the centroid of the submerged area
- b)always above the centroid of the area
- c)always beiow the centroid of the area
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
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The position of centre of pressure on a plane surface immersed vertica...
The correct answer is 'C', the position of center of pressure on a plane surface immersed vertically in a static mass of fluid is always below the centroid of the submerged area. This is due to the fact that the fluid exerts a greater force on the lower portion of the surface, which causes the center of pressure to be located at a lower point. The center of pressure is defined as the point at which the resultant of all the forces acting on the submerged surface is acting. It is important to note that this applies to surfaces that are vertical and submerged in a static fluid, the location of the center of pressure can vary for surfaces that are inclined or for fluids in motion.
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The position of centre of pressure on a plane surface immersed vertica...
Explanation:
When a plane surface is immersed vertically in a static mass of fluid, the fluid exerts a force on the surface. This force is divided into two components - normal force and tangential force.
- Normal Force: This force acts perpendicular to the surface and passes through the centroid of the submerged area. It is equal to the weight of the fluid displaced by the submerged area of the surface.
- Tangential Force: This force acts parallel to the surface and passes through a point known as the center of pressure.
The position of the center of pressure depends on the shape of the surface and the fluid properties. In general, the following rules apply:
- For a flat surface, the center of pressure is always below the centroid of the submerged area. This is because the tangential force is always directed downwards due to the pressure gradient in the fluid.
- For a curved surface, the center of pressure may be above or below the centroid of the submerged area, depending on the curvature of the surface and the fluid properties.
Therefore, the correct answer is option C - always below the centroid of the area.
When a plane surface is immersed vertically in a static mass of fluid, the fluid exerts a force on the surface. This force is divided into two components - normal force and tangential force.
- Normal Force: This force acts perpendicular to the surface and passes through the centroid of the submerged area. It is equal to the weight of the fluid displaced by the submerged area of the surface.
- Tangential Force: This force acts parallel to the surface and passes through a point known as the center of pressure.
The position of the center of pressure depends on the shape of the surface and the fluid properties. In general, the following rules apply:
- For a flat surface, the center of pressure is always below the centroid of the submerged area. This is because the tangential force is always directed downwards due to the pressure gradient in the fluid.
- For a curved surface, the center of pressure may be above or below the centroid of the submerged area, depending on the curvature of the surface and the fluid properties.
Therefore, the correct answer is option C - always below the centroid of the area.
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The position of centre of pressure on a plane surface immersed vertically in a static mass of fluid isa)at the centroid of the submerged areab)always above the centroid of the areac)always beiow the centroid of the aread)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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