Unformatted text preview: net F air ρ w g ⋅ V d ⋅ − = and V d F air F net − ρ w g ⋅ = Now in order to find the specific gravity of the person, we need his/her density: F air M g ⋅ = ρ g ⋅ V d ⋅ = ρ g ⋅ F air F net − ( ) ρ w g ⋅ ⋅ = Simplifying this expression we get: F air ρ ρ w F air F net − ( ) = Now if we call the density of water at 4 deg C ρ w4C then: F air ρ ρ w4C ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ ρ w ρ w4C ⎛ ⎜ ⎝ ⎞ ⎟ ⎠ F air F net − ( ) = SG SG w F air F net − ( ) ⋅ = Solving this expression for the specific gravity of the person SG, we get: SG SG w F air F air F net − ⋅ =...
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 Fall '07
 Lear
 Fluid Mechanics

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