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CE 321 Lab 2 – Fluid Statics. General Information Worksheet and Spreadsheets due Thursday by 12 Noon Lab Reports due Tuesday by 4.00 pm. Hydrostatic Theory. Horizontal Plane. Resultant Force =. Centroid= h/2. Vertical Plane. ……………………………... (1) (Theoretical). …………………… (2).
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CE 321 Lab 2 – Fluid Statics • General Information • Worksheet and Spreadsheets due Thursday by 12 Noon • Lab Reports due Tuesday by 4.00 pm
Hydrostatic Theory Horizontal Plane Resultant Force =
Centroid= h/2 Vertical Plane ……………………………... (1) (Theoretical) …………………… (2)
Objectives • Experimentally verify the accuracy of the equation derived from Hydrostatic theory to predict the location of center of pressure • Determine if uncertainty in measurements appear to explain the inaccuracy in predicting the location of center of pressure using the equation derived from Hydrostatic theory • Comment on the suitability of the equation derived from Hydrostatic theory for engineering use
L1 L4 CW Pivot L3 L2 W yR l d FR w Where, = force produced by the mass placed on the tray, = resultant force = length of the arm where resultant force acts = length of the arm where W acts = location on the submerged plane where resultant force is acting (Experimental)
PPre Pressure Prism for Partially and Fully submerged case Partially Submerged Fully Submerged
Post Lab Session Analysis • Enter data into spreadsheet & study the plot Theo Uncertainty explains inaccuracy Uncertainty does not explain inaccuracy
In order to answer each objective • NOTE: Consider the two cases (partially and fully submerged) separately for each objective • Objective 1 • Consider the inaccuracy in both the 2 cases separately • Look at Error ( Relative error) • Objective 2 • Look at the plot and comment • Compare Error and Propagated uncertainty. Does uncertainty account for inaccuracy? • Objective 3 • Comment on suitability of Eq.1. for engineering use • Consider inaccuracy, uncertainty and state the logic behind your conclusion