Understanding Archimedes’ Principle and Buoyant Force in Fluids

Understanding Archimedes’ Principle and Buoyant Force in Fluids

• 1.
  Archimedes’ Principle
• 2.
  WHICH SITUATION ISEASIER? WHY?
• 4.
  This is dueto a force that we call as BUOYANT FORCE. Buoyant Force: The upward force on objects that are partially or completely submerged in fluids.
• 5.
  Why object sinksor floats in relation to buoyant force?
• 6.
  DENSITY Density - isthe amount of matter packed into a certain amount of space. The more tightly packed the particles are, the higher the density. Water has a density of about 1.0 g/cm³ (1000 kg/m³), which is why it is used as the reference for determining whether objects float or sink.
• 8.
  Archimedes’ Principle
• 10.
  “Any object completelyor partially submerged in a fluid experiences an upward force equal in magnitude to the weight of the fluid displaced by the object.” - Archimedes’ Principle
• 11.
  ARCHIMEDES’ PRINCIPLE The morefluid or water displaced, the more likely an object to float.
• 12.
  What is thedifference between mass and weight?
• 14.
  SAMPLE PROBLEM Calculate buoyantforce on a rock of mass 32 kg and density 2,800 kg/m3 when fully submerge in water density 1,000 kg/m3 . Fb = ρ × V × g
• 15.
  Does the shapeof an object affects the buoyant force?
• 17.
  SHAPE MATTERS HOLLOW OBJECTS– displace more water FLAT AND WIDE OBJECTS – floats better