Friction_Lab_-_RUBRIC.doc

# All forces are balanced 5 3 5 3 5 3 3 3 3 3 3 3 3 3 3

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All forces are balanced 5 3 5 3 5 3 3 3 3 3 3 3 3 3 3 3 3 3 Data Table Weight is shown for your shoe 3 measurements of force applied trials per surface (1 point per measurement) Each surface has a title (floor, chair, table, etc.) Calculations Formula to calculate coefficient of friction is shown s =F f /F W Coefficient of Friction calculations for each surface is shown (2 points per calculation) Error Analysis Plausible reason that is explained in detail Complete sentences Conclusion/Derivation Section States a number for static friction coefficient for each surface (1 point per measurement) Discuss how you were able to determine that the peak of your Force vs time graph was the force of static friction and that the linear portion after that was the force of kinetic friction. (Explain how we know that the peak must = static friction force, and the flat part after that must be kinetic friction force) Conclusion is a paragraph, complete sentences. 5 9 5 5 6 5 5 3 10 5 Notebook Belongs To: ___________________________________ Grader: ______________________________ Grade: _____ Friction Lab – Grading Rubric Directions : Start with 100 points.
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