Experiment 6_ Coefficient of Friction.docx - Experiment 6...

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Experiment 6: Coefficient of Friction Lab Report Lab Partner: Nate
Abstract The objective of this experiment was to measure static and kinetic friction in between wooden block and wooden surface with differents weights and inclination. To do this experiment a wooden block, wooden table, triple beam balance , inclined surface with inclination measures and a LabPro hardware and software was used. In part 1 coefficient of friction was found from slope of the graphs plotted from force VS the normal force for horizontal surfaces . In part 2 the the coefficient of friction was found from angle of repose and constant velocity. Primary sources of errors were from an in accurate weight measures, approximation of angle of inclination and non fluid motion for the block movement while dragging. Results Presentation Coefficient Pulling Method (Horizontal Plane) Sliding Method (Inclined Plane) % Diff Static µ s = 0.2929 Angle of Repose µ s = tan(25) = 0.4663 37.18% Friction µ k = 0.2254 Constant Velocity µ k = tan(14) = 0.2493 9.58% Force for constant v (Sliding of block) Part 2 Calculated Measured % Diff F mean(Us) 5.085 N 5.320 N 4.61% Sample Calculations + Graphs IN part 1:-

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