3 Lab 8 Static Friction.docx

# 3 Lab 8 Static Friction.docx - PHYS 111 Lab 8 Static...

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PHYS 111 Lab 8: Static Friction Names of the students who worked on this lab (each student should use a different color): Emmie Nguyen, Tanner Myhre, Mohammed Alhumidiaherz, Veronica Hernandez When you are done with the lab, please fill out the peer evaluation form linked below for you and your partners. If you don’t fill out a peer evaluation and defend any low scores by the day after the lab is due, you will lose 2 points. -- VdEfc_F_3ZpWgafpwYFTiB3o1MCXSIAGYBTYbdIbLpw/viewform?usp=sf_link INTRODUCTION In this short laboratory activity, you will perform some simple measurements to determine the coefficient of static friction, μ s , between a tilted surface (inclined plane) and a large book . Static friction is the force that opposes one surface’s movement across the other when the two surfaces are in contact and at rest. The mathematical expression that we use for the maximum static friction value, f s , max , is f s ,max = μ s n , which is proportional to the magnitude of the normal force, n . f s , max is the force that friction exerts just before the two surfaces in contact begin to slide past each other. OBJECTIVE To determine the maximum coefficient of static friction between two surfaces . MATERIALS Flat surface you can tilt Large book Ruler Protractor EXPERIMENTAL PROCEDURE Part I: Developing a model 1. Draw a sketch and a free body diagram for a large book that rests (in static equilibrium) on a tilted surface ( inclined plane) T he plane makes an angle θ with respect to the horizontal. The static friction force acting on this block is the maximum force f

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• Winter '19
• Bruce Palmquist
• Friction, Σ Fx, fsmax, Veronica Hernandez, Emmie Nguyen

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