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5. Examine the four following graphs of frictional force vs. normal force. II. III. H I. (N 4) IV.

5. Examine the four following graphs of frictional force vs. normal force. II. III. H I. (N 4) IV.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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#5 which is the correct graph and why aren’t other correct?
**Educational Website Transcription** --- **Frictional Force Experiment** **Objective:** The purpose of this activity is to explore the relationship between frictional force and normal force. **Instructions:** 1. **Predict Friction Coefficients:** Anticipate the relative coefficients of friction between different surfaces, such as wood and sandpaper. 2. **Examine Graphs:** Consider the four diagrams of frictional force versus normal force: - **Graph I:** Shows a linear increase in friction with normal force up to a certain point, where it levels off. - **Graph II:** Displays a sudden increase in friction, which remains constant. - **Graph III:** Exhibits a sharp increase followed by a decrease before leveling. - **Graph IV:** Indicates a steady linear increase in friction as normal force increases. 3. **Identify Correct Graph:** - Determine which graph accurately reflects the relationship between frictional and normal force. - Explain why other graphs may not properly demonstrate this relationship. 4. **Experiment Design:** - Develop experimental procedures to evaluate how surface area, mass, and surface type influence kinetic and static friction. - Provide a detailed, step-by-step methodology for each factor. 5. **Variable Control:** - Consider and list additional variables that could affect the experiment's reproducibility and accuracy, and describe how they will be managed. 6. **Execute the Experiment:** - Conduct the experiment and document results in an appropriate data table. **Analyze the Results:** - Calculate static and kinetic friction coefficients for each variable tested: surface area, mass, and surface type. - Present collected data and calculated values in data tables. Graphically represent the mass added. - Write a concluding paragraph summarizing the data and analysis for each variable. **Additional Resources:** - **Student Worksheet PDF:** [Download the worksheet](https://globalassets.flinn-scientific/all-publication-images-and-pdfs/13784_student1.pdf?c72b4f6c22ad443980ec653b5b4aacc9) --- This transcription provides a comprehensive guide for students to conduct and analyze friction experiments, understanding the role of multiple variables in physics experiments.
Transcribed Image Text:**Educational Website Transcription** --- **Frictional Force Experiment** **Objective:** The purpose of this activity is to explore the relationship between frictional force and normal force. **Instructions:** 1. **Predict Friction Coefficients:** Anticipate the relative coefficients of friction between different surfaces, such as wood and sandpaper. 2. **Examine Graphs:** Consider the four diagrams of frictional force versus normal force: - **Graph I:** Shows a linear increase in friction with normal force up to a certain point, where it levels off. - **Graph II:** Displays a sudden increase in friction, which remains constant. - **Graph III:** Exhibits a sharp increase followed by a decrease before leveling. - **Graph IV:** Indicates a steady linear increase in friction as normal force increases. 3. **Identify Correct Graph:** - Determine which graph accurately reflects the relationship between frictional and normal force. - Explain why other graphs may not properly demonstrate this relationship. 4. **Experiment Design:** - Develop experimental procedures to evaluate how surface area, mass, and surface type influence kinetic and static friction. - Provide a detailed, step-by-step methodology for each factor. 5. **Variable Control:** - Consider and list additional variables that could affect the experiment's reproducibility and accuracy, and describe how they will be managed. 6. **Execute the Experiment:** - Conduct the experiment and document results in an appropriate data table. **Analyze the Results:** - Calculate static and kinetic friction coefficients for each variable tested: surface area, mass, and surface type. - Present collected data and calculated values in data tables. Graphically represent the mass added. - Write a concluding paragraph summarizing the data and analysis for each variable. **Additional Resources:** - **Student Worksheet PDF:** [Download the worksheet](https://globalassets.flinn-scientific/all-publication-images-and-pdfs/13784_student1.pdf?c72b4f6c22ad443980ec653b5b4aacc9) --- This transcription provides a comprehensive guide for students to conduct and analyze friction experiments, understanding the role of multiple variables in physics experiments.
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Frictional force which acts opposite to the direction of motion.

Frictional force depends on normal force and coefficient of friction for the pair of surfaces. 

 

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