Fluid and
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Pressure_
andKey
Pressure_
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and_ Formulas
Study Guide,
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Fluid Mechanics and Pressure: Key
Concepts and Formulas | Study Guide,
Practice Problems & Exam Review
2026/2027
Fluid Mechanics
Fluid and
Mechanics
Pressure_
andKey
Pressure_
Concepts
Keyand
Concepts
Formulas
and_ Formulas
Study Guide,
_ Study
Practice
Guide,
Problems
Practice&Problems
Exam Review
& Exam
2026_2027
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,Fluid Mechanics and Pressure_ Key Concepts and Formulas.pdf Fluid Mechanics and Pressure_ Key Concepts and Formulas.pdf Page 2 of 32
What is a fluid?
Any substance that can move — liquids (water, blood, honey) and gases (O2, gas mixtures);
molecules are free to move and collide with things
What is the formula for pressure?
P = Force / Area
What are the two ways to increase pressure?
Increase the force (harder/more molecular collisions) OR decrease the area (same force
over less surface)
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,Fluid Mechanics and Pressure_ Key Concepts and Formulas.pdf Fluid Mechanics and Pressure_ Key Concepts and Formulas.pdf Page 3 of 32
What is the SI unit of pressure?
Pascal (Pa) = 1 N/m²
What is the English unit of pressure?
psi (pounds per square inch)
What column height of mercury equals 1 atmosphere?
760 mmHg
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What column height of water equals 1 atmosphere?
1033 cmH2O
What psi equals 1 atmosphere?
14.7 psi
What is 1 atmosphere in Pascals?
101,325 Pa = 101 kPa
Where does a solid generate pressure?
Only on the bottom surface (due to its weight)
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