Coefficients of Friction Report - Results Table 1 The Coefficients of Friction Method Graph Angle of Repose Diff s.33.31N 6.25 k.28.27N 3.64 Table 2

# Coefficients of Friction Report - Results Table 1 The...

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Results: Table 1: The Coefficients of Friction Method s k Graph .33 .28 Angle of Repose .31N .27N % Diff 6.25% 3.64% Table 2: Tension Tension Experimental 6.13 N Tension Theoretical 3.14 N % Error 95.22% Conclusion: The purpose of our experiment was to measure and analyze the coefficients of friction s and k between a wood block and a wood plane. My partner and I were successful in completing the assignment and our data collected was consistent with the theory of coefficient of friction. We were satisfied with the validity of the theory as it correlated with our data. Questions: 1.Show that S = tan for the angle of repose. 2.If the mass of the block is tripled, does the angle of repose change? Yes, because the block would bear more weight which would require a higher angle of repose.
3.Why was it necessary to tap the block to get it started in Part 5? Yes, because otherwise it would not have moved at a constant velo-city. 4.Why can anti-lock brakes stop a car in a shorter distance than regular brakes? (Comment on the difference between static and kinetic fric-tion.) Anti-lock brakes applies kinetic friction to tires of a car which is de-creased in the amount of static friction used which conventional breaks use. 5.Compare the graph and experimental values for the coefficients of friction. Is μs > μk for each method? Yes, μs is typically larger.