Lab 6 Friction

Topics: Velocity, Classical mechanics, Mass Pages: 3 (992 words) Published: April 15, 2013
Experiment 06: Friction
Submitted by: Porsha Renee Sumner
Lab Partners: Amber Carter, Emily Rawles, Clayton Scott
Wednesday, March 6, 2013, 9:00 AM
Lab Instructor: Uttar Pudasaini

In this experiment we will be examining how the kinetic friction coefficient is altered by changing the mass, surface area, speed, and material contacting each other. In order to find this value, we will be using a pulley apparatus that will allow us to measure the average velocity and manipulate Newton’s Second Law of Motion to find the kinetic friction coefficient. Based on contacting each other. Procedures

First we began by leveling the track using the bulls-eye leveler. Then we connected the pulley to the interface device. Then we found the mass of the block being utilized in the experiment with a trip balance. Next, we attached the track to the pulley using the universal table clamp. Before moving on we made sure that the string attached to the pulley was parallel to the track. Then we attached the mass hanger to the end of the string on the other side of the pulley hanging vertically over the floor. Then we conducted a trial run with just enough mass to get the block to start moving while it was on the wood side. To conduct the actual experiment we had many different types of weights to put on the block and we flipped the block to different sides. The three sides of the block were the wood, cork, and felt sides. After each run, we conducted computer analysis using the Friction Program. On this program, we were able to see a graph of the time vs velocity plot that allowed us to find the average velocity. For runs 1, 2, 3,4,5,7, and 8, we used the actual mass of the block. For the other runs, we doubled the mass of the block. For runs 1-3, we used the wood side of the block, runs 4-6 we used the felt side, and for runs 7-9 we used the cork side. After simple calculations, we were able to find the coefficient of friction at the end. Data Analysis...
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