KAA110 - Engineering Statics Lab Task 2: Hydrostatic Equilibrium Formal lab report required. Objective  To Study the hydrostatic pressure on a submerged plate  To predict the resultant force and...

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KAA110 - Engineering Statics Lab Task 2: Hydrostatic Equilibrium Formal lab report required. Objective  To Study the hydrostatic pressure on a submerged plate  To predict the resultant force and moment of the hydrostatic pressure  To verify the predicted calculation with measured values Equipment  A tank filled with water  A rotating assembly containing a plate to be submerged in water  A set of balancing weights that can slide on the assembly and can be fixed on the sliding rods  A protractor fixed on the tank to measure the rotation angle of the plate  A ruler Procedures 1. Measure the dimensions (width and depth) of the red plate and the tank, the radial distance from the top edge of the plate to the axis of rotation, and the distance from the axis of rotation to the water surface. 2. Balance the rotating assembly by adjusting the weights on the rods. The edge of the plate should be just above the water’s surface when attempting to find equilibrium. 3. Record the location of the masses required to obtain equilibrium. 4. Submerge the plate in water to rotate the plate to the angle specified by the lab demonstrator. 5. Re-balance the assembly by adjusting the weights on the rod so that the angle of the plate in the equilibrium position matches the provided value. 6. Record the new locations of the balancing masses to allow you to calculate the moment required to maintain equilibrium with the plate submerged. 7. Additionally record the depth of each edge of the red plate below the water surface Report A full formal lab report is required for the Hydrostatics Lab. You have two weeks from the lab date to submit the lab report. Your lab report should contain the following sections:  Summary  Introduction  Method  Results  Discussion  Conclusion  References The Summary should concisely outline the lab aim, procedure, results and outcomes in 300 words or less. A reader should be able to get a good idea of what was done and what they would find out if they read the full report. An Introduction should provide context for the work conducted. Explain why is it important to understand hydrostatic forces and moments. State the aims of the experiment and explain the theory relevant to the lab. Your Method section should introduce the experimental approach including a diagram of the apparatus. Explain how it is used to obtain the experimental results. You should list and explain any assumptions and the steps taken to ensure the results were reliable. The experimental and theoretical results should be presented in the Results section in such a way that a comparison between the theory and experimental data can easily be made (hint: a table might be appropriate). Calculate and present the difference between the theoretical and experimental results for discussion and interpretation later. Include an explanation of any result before presenting it and ensure that tables and figures have appropriate captions. Interpretation of results should occur in the Discussion section. It is important to list any error sources and estimate their magnitude, but first discuss the experimental/theoretical data and what understanding can be gained from it. Support any statement you make by referring to your experimental and theoretical data. The text of your report should end with a Conclusion. In two or three sentences, recap the aim and approach taken. Then state the main outcomes of the work – i.e. did theory successfully replicate the experimental truth? And based on the experiments, to what accuracy could theory be used to predict hydrostatic loadings? Were the errors small enough to be confident in the results? Finally, you should list any references used in generating the report to properly acknowledge use of work by others in Harvard style. KAA110 - Engineering Statics Marking Rubric Lab 2: Hydrostatic Equilibrium Student Name: ________________________________________ Student Number:_________________________________________ Criteria 80-100% 65-80% 50-65% 0-50% 1. Predict and analyse experimental results, 30% Accurately calculate the predicted results based on the selected coordinate system and equilibrium equations. Clearly interpret the measured results Accurately calculate the differences between the predicted and measured values and clearly present your comparison in a table Calculate the predicted results based on the selected coordinate system and equilibrium equations. Interpret the measured results Calculate the differences between the predicted and measured values Error in predicted or measured results but not both Some insight into measured results given Unexpectedly large errors identified Error in predicted and measured results or results missing Little insight given into measured results 2. Apply knowledge of hydrostatics, 30% Correctly and clearly draw a system diagram with all critical features, including the hydrostatic loading and the balancing forces produced by the masses Correctly express the distributed hydrostatic load and present as a line load. Correctly integrate the hydrostatic to determine an equivalent force and moment for the hydrostatic load and correctly calculate the load centroid. Clearly draw a system diagram including most of the critical features. Correctly express the distributed hydrostatic load and present as a line load. Integrate the hydrostatic to determine an equivalent force and moment for the hydrostatic load and calculate the load centroid with only minor error. Draw a system diagram including most of the critical features. Express as a function for the distributed hydrostatic load and present as a line load. Attempt to integrate the hydrostatic to determine an equivalent force and moment for the hydrostatic load and calculate the load centroid. System diagram not included or missing critical features or is not legible The hydrostatic load is not expressed as a line load. 3. Present report in a professional manner, 40% Correctly list any assumptions and factors that may contribute to differences between predicted and measured values Test apparatus clearly sketched and other diagrams to appropriate scale, all well labelled Concisely discuss observations Correctly apply relevant knowledge in discussing the results and your experience in performing this experiment Correctly use language without spelling and grammar errors List most important assumptions and factors which contribute to differences between predicted and measured values Provide a sketch of the test apparatus and some additional diagrams, all well labelled Observations discussed with most important points covered Minimal spelling and grammar errors Important assumptions not listed or some incorrect assumptions listed A sketch is provided, but information is missing or the sketch is poorly presented Some meaningful observations made Written work can be understood but has spelling errors or poor grammar Incorrect assumptions listed or assumptions not listed Sketch not presented or of not legible Observations not discussed Sections of written work cannot be understood.