What this chapter is about
Fluids—liquids and gases—differ fundamentally from solids in their ability to flow. Unlike solids that resist deformation, fluids continuously deform under shear stress, adapting to container shapes and flowing freely. Understanding fluid behavior is essential for countless applications: designing pipelines, aircraft wings, hydraulic systems, and water treatment plants. Fluids transmit pressure in all directions, support floating objects through buoyancy, and exhibit resistance to flow through viscosity. The fundamental difference between static fluids (at rest) and dynamic fluids (in motion) leads to different analytical approaches. Static fluids follow hydrostatic principles where pressure depends on depth and density. Moving fluids follow principles of continuity and energy conservation, exemplified by Bernoulli's equation. This chapter develops the concepts governing fluid behavior in both static and dynamic situations.
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Learning objectives
- 1Explain pressure, Flow, Buoyancy, and Viscosity
- 2Explain pRESSURE IN FLUIDS
- 3Explain definition of Pressure
- 4Explain hydrostatic Pressure
- 5Explain barometric Pressure
- 6Explain pascal's Principle