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Pressure & Buoyant Force
BlackBoard Notes

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Part I: Pressure – Depth Relation:

Can
Force Diagram: forces when floating:
Fb – Fg = 0

  • Pressure on bottom of jar:

    Pressure

    .

  • Pressure at depth h below water surface:

    P = ρwgh

  • Keep the sand dry!

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    Part II: Archimedes' Principle: "The buoyant force equals the weight of the volume of the displaced fluid"

    .

  • Block

     
     

    In Air!
    Tair – Fg = 0

    Forces

    In Water!
     

     

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  • When the block is suspended in water:

     

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    Revised: 13 Dec 23 Canton, NY 13617