9. MECHANICAL PROPERTIES OF FLUIDS - CBSE 11 Physics Part 2
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9. MECHANICAL PROPERTIES OF FLUIDS

9. MECHANICAL PROPERTIES OF FLUIDS

The chapter provides an in-depth exploration of the mechanical properties of fluids, emphasizing key concepts such as pressure, viscosity, surface tension, and Bernoulli's principle. It highlights the behavior of liquids and gases under different conditions, the principles of fluid dynamics, and real-world applications of these concepts. Understanding these properties is crucial for various scientific and engineering domains.

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  1. 9
    Mechanical Properties Of Fluids

    This section introduces the mechanical properties of fluids, emphasizing...

  2. 9.1
    Introduction

    This section introduces the fundamental properties of fluids, distinguishing...

  3. 9.2

    This section discusses the concept of pressure in fluids, illustrating how...

  4. 9.2.1
    Pascal’s Law

    Pascal's Law states that pressure applied at any point on a confined fluid...

  5. 9.2.2
    Variation Of Pressure With Depth

    Pressure in a fluid increases with depth due to the weight of the fluid above it.

  6. 9.2.3
    Atmospheric Pressure And Gauge Pressure

    This section discusses atmospheric pressure and gauge pressure, defining...

  7. 9.2.4
    Hydraulic Machines

    This section discusses the principles behind hydraulic machines, emphasizing...

  8. 9.3
    Streamline Flow

    Streamline flow refers to a steady state of fluid motion where the velocity...

  9. 9.4
    Bernoulli’s Principle

    Bernoulli's Principle relates the pressure, kinetic energy, and potential...

  10. 9.4.1
    Speed Of Efflux: Torricelli’s Law

    Torricelli's Law states that the speed of efflux of a fluid from a hole in a...

  11. 9.4.2
    Dynamic Lift

    Dynamic lift refers to the upward force experienced by objects such as...

  12. 9.5

    Viscosity is the measure of a fluid's resistance to flow, akin to internal...

  13. 9.5.1
    Stokes’ Law

    Stokes' Law describes the viscous drag force experienced by a falling body...

  14. 9.6
    Surface Tension

    Surface tension is the property of liquids that causes them to acquire the...

  15. 9.6.1
    Surface Energy

    Surface tension is the extra energy associated with the surface of liquids...

  16. 9.6.2
    Surface Energy And Surface Tension

    This section covers the concepts of surface energy and surface tension,...

  17. 9.6.3
    Angle Of Contact

    The angle of contact is the angle formed between the tangent to a liquid's...

  18. 9.6.4
    Drops And Bubbles

    This section discusses the spherical shape of liquid drops and bubbles due...

  19. 9.6.5
    Capillary Rise

    Capillary rise occurs when water moves upward in a narrow tube due to...

  20. 9.7

    This section provides an overview of the key concepts discussed in the...

  21. 9.8
    Points To Ponder

    This section highlights key considerations regarding fluid properties,...

What we have learnt

  • Fluids have no definite shape and can flow, distinguishing them from solids.
  • Pressure in a fluid varies with depth and is the same at a given height in a fluid at rest, as per Pascal's law.
  • Bernoulli's principle explains the relationship between pressure and fluid velocity along a streamline.

Key Concepts

-- Pressure
Pressure is defined as the force exerted per unit area and is a scalar quantity.
-- Viscosity
Viscosity is the measure of a fluid's resistance to deform under shear stress or flow.
-- Bernoulli's Principle
Bernoulli's principle states that in a steady flow, the sum of the pressure energy, kinetic energy, and potential energy remains constant along a streamline.
-- Surface Tension
Surface tension is the energy required to increase the surface area of a liquid due to the cohesive forces between liquid molecules.

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