Lab Report Ex 3 Pr 1

Lab Report Ex 3 Pr 1 - 198g 13.7 .093 m/s^2-.398 .211 Run 5...

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Lab Report March 7 th 2008 Lab Report Experiment 3 Problem 5 Introduction- For this lab we studied the effects of kinetic friction when a block slid down an aluminum ramp. We ran 6 runs and for each run we changed the angle of the ramp. Procedure- The first thing we did was set up the ramp for the first run. Once we had that all together we measured the height of the ramp and the hypotenuse. With these two sides known we were able to find angle theta by using sin (theta)= opp/hyp. Once our first run was done we repeated the process 5 more time, every time at a different angle. Data- Run # Block Theta (deg.) Acceleration Ff Coefficient Run 1 198 g 19 1.04 m/s^2 -.426 .232 Run 2 198 g 16.5 .756 m/s^2 -.401 .215 Run 3 198 g 15.1 .422 m/s^2 -.421 .224 Run 4
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Unformatted text preview: 198g 13.7 .093 m/s^2-.398 .211 Run 5 198 g 24 1.5 m/s^2-.492 .277 Run 6 198 g 21.6 1.19 m/s^2-.478 .264 Results- As you can see the results look pretty good. The Friction force, as the angle gets steeper, gets bigger and the coefficient stays the same (for the most part). The reason why the coefficient stays the same is because the only factors that determine it are the materials. In our case we had wood and aluminum. Conclusion- This lab teaches us that friction force changes with mass and angle but the coefficient of friction only depends on the material of the block and ramp. Coefficient of Kinetic Friction-0.3-0.25-0.2-0.15-0.1-0.05 1 2 3 4 5 6 Normal Force Friction Force Coefficient o...
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Lab Report Ex 3 Pr 1 - 198g 13.7 .093 m/s^2-.398 .211 Run 5...

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