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Pressure in Fluids and Atmospheric Pressure — Formula Sheet

ICSE · Class 9 · Physics

12 formulas from Pressure in Fluids and Atmospheric Pressure (ICSE Class 9 Physics) on one page, grouped by topic.

42 questions35 flashcards12 formulas & key relations5 concepts

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A diagram illustrating the difference between thrust and pressure using a block placed on a surface. Show the same block exerting the same thrust (its weight) but different pressures depending on the
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12 Entries · 6 Sections

Formulas and Key Relations

1. Thrust, Pressure, and Units

P = F/A

1 Pa = 1 N m^-2

2. Pressure in Fluids and Liquid Pressure

P = hρg

Total pressure = P0 + hρg

3. Pascal's Law and Hydraulic Machines

F1/A1 = F2/A2

F2/F1 = A2/A1

M.A. = Load/Effort > 1

V.R. = distance moved by effort/distance moved by load > 1

4. Atmospheric Pressure and Barometers

1 atm = 0.76 m of Hg = 1.013×10^5 Pa

1 torr = 1 mm of Hg

Hydraulic machine problems use F1/A1 = F2/A2.

Key relations

Pressure at depth h in a liquid is given by P = hρg.

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Frequently Asked Questions

What are the important topics in Pressure in Fluids and Atmospheric Pressure for ICSE Class 9 Physics?
Key topics in Pressure in Fluids and Atmospheric Pressure include Thrust, Pressure, and Units, Pressure in Fluids and Pressure Due to Liquid Column, Pascal's Law and Hydraulic Machines, Atmospheric Pressure and Barometers. Study these first, then practise questions on each for Class 9 exams.
How many formulas are in Pressure in Fluids and Atmospheric Pressure?
This sheet lists 12 formulas from Pressure in Fluids and Atmospheric Pressure, grouped by topic. Learn what each symbol stands for so you can apply the formula, not just recall it.
How should I revise Pressure in Fluids and Atmospheric Pressure for Class 9 exams?
Learn the core ideas first, then work through the 42 practice questions on Pressure in Fluids and Atmospheric Pressure. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 9 Physics Formula Sheet

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