PHYSICS 2 MOD1

• is any substance that can flow either a liquid or a gas

  FLUID
• FLUID MECHANICS


  The branch of science which deals with the study of the behaviour of fluids (gases or liquids)
• FLUID STATICS


  the study of fluids at rest or equilibrium situations
• FLUID DYNAMICS 


  is the study of fluids in motion.
• Density Formula


  $ρ =$$m/v$
• DENSITY 


  is defined as mass per unitvolume
• Density of Water

  $1000 kg/m^3$
• RELATIVE DENSITY


  (specific gravity) ρr of a material is the ratio ofits density to the density of water (1000 kg/m3).
• Pressure


  It is the amount of force exerted on a givenarea.
• Pressure Formula


  $P =$$F/A$
• If the applied force is acting on a small area, then the pressure will be large
• Unit of Pressure

  Pa (Pascal) or N/m^2
• Fluid Pressure Formula


  P=ρgh
• As you go deeper the swimming pool, the pressure gets Higher
• The force F exerted by a fluid on the wallsof its container always acts perpendicularto the walls.
• Fluid exerts forces in many directions.
• At any depth h below the surface of the water in anycolumn, the pressure P is the same. The shape and area arenot factors.
• The fluid pressure is directly proportional to the depth of the fluid andto its density.
• Atmospheric Pressure Formula


  $Ptotal =$$Patm +$$ρgh$
• HYDRAULIC PRESSURE (Pascal’s principle)


  $𝑭𝟏/𝑨𝟏 =$$𝑭𝟐/𝑨𝟐$
• HYDRAULIC PRESSURE


  the same amount of fluid leaves on the left and enters on the right side.
• Buoyant Force (Archimedes' Principle)


  The buoyant force FB is due to the difference ofpressure ∆ 𝑃 between the top and bottomsurfaces of the submerged block
• BUOYANT FORCE FORMULA


  $𝑭 =$$𝝆𝒇𝒈 𝑽$
• ARCHIMEDES’ PRINCIPLE


  An object that is completely or partially submerged in a fluidexperiences an upward buoyant force equal to the weight of the fluiddisplaced.
• Relative Density Formula 


  $𝝆 =$$𝝆x/ 𝝆(H2O)$