Podcast
Questions and Answers
What is the law that states that a certain pressure applied at any point in a fluid at rest is equally transmitted in all directions and to every other point in the fluid?
What is the law that states that a certain pressure applied at any point in a fluid at rest is equally transmitted in all directions and to every other point in the fluid?
- Stokes law
- Archimedes principle
- Pascal's law (correct)
- Newton's law
What happens to the water level in a vessel if a block of ice floating over water in it slowly melts?
What happens to the water level in a vessel if a block of ice floating over water in it slowly melts?
- It increases
- It increases or decreases depending on temperature
- It remains the same (correct)
- It decreases
Which set of conditions clearly applies to an ideal fluid?
Which set of conditions clearly applies to an ideal fluid?
- Non-viscous and compressible
- Viscous and compressible
- Viscous and incompressible
- Non-viscous and incompressible (correct)
What does the existence of velocity potential imply about the flow of a fluid?
What does the existence of velocity potential imply about the flow of a fluid?
What is the absolute pressure in a vessel if the reading of the pressure gauge is 25 bars and the atmospheric pressure is 1.03 bar?
What is the absolute pressure in a vessel if the reading of the pressure gauge is 25 bars and the atmospheric pressure is 1.03 bar?
What principle is the Euler's equation of motion for the flow of an ideal fluid derived from?
What principle is the Euler's equation of motion for the flow of an ideal fluid derived from?
Flashcards
Pascal's Law
Pascal's Law
A fundamental principle in fluid mechanics stating that pressure applied to an enclosed fluid is transmitted undiminished to every point within the fluid.
Floating Ice & Water Level
Floating Ice & Water Level
When a block of ice floating in a vessel melts, the water level remains the same because the ice displaces the same volume of water as its melted equivalent.
Ideal Fluid
Ideal Fluid
A theoretical fluid with no viscosity (no internal friction) and incompressibility (constant density).
Velocity Potential
Velocity Potential
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Absolute Pressure
Absolute Pressure
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Euler's Equation
Euler's Equation
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Study Notes
Fluid Mechanics
Pressure in Fluids
- Pascal's law states that when a certain pressure is applied at any point in a fluid at rest, the pressure is equally transmitted in all directions and to every other point in the fluid.
Buoyancy and Flotation
- When a block of ice, floating over water in a vessel, slowly melts, the water level in the vessel will remain the same.
Ideal Fluid
- An ideal fluid is non-viscous and incompressible.
Pressure Measurement
- To find the absolute pressure in a vessel, the reading of the pressure gauge must be combined with the atmospheric pressure.
- Example: If the reading of the pressure gauge is 25 bars and the atmospheric pressure is 1.03 bar, the absolute pressure in the vessel is 26.03 bar.
Fluid Flow
- Existence of velocity potential implies that the flow is irrotational.
- Euler's equation of motion for the flow of an ideal fluid is derived considering the principle of conservation of momentum and the fluid as incompressible and inviscid.
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Description
Test your understanding of fluid mechanics with these questions on pressure transmission and buoyancy. Apply your knowledge of Pascal's law and Archimedes' principle to solve these problems.
