Experiment 7 Coefficients of Friction - Results\/Graphs Please see attached graphs JClents 0 fF'r riC Jon tatlc Table I Comparison 0 f S an dKme f IC

Experiment 7 Coefficients of Friction - Results/Graphs...

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Results/Graphs Please see attached graphs. Table I: Comparison 0 fS' dK me f IC C ff' JClen ts 0 fF'r tatlc an oe riC Jon Method IJs IJk 0.230 0.404 Angle of Re~ose 0.233 0.403 Graph 0.248% difference 1.30% differ~ce Compare /' Table II: Comparison of Theoretical and Experimental Tension (T) Values Method T Theoretical 4.18 N /' Experimental 4.91 N Compare 16.1% error Questions 1. Show that !-Is =tane for the angle of repose. Refer to page ~~ -m~:: PI( -M OSiYll) -¢ N -MS CaS e.:: f J..t FrJ\<.-.4r. f N -ms 5iYl 6--;:-fJ FN -Y1'\3 Cv$'G ;:: tP FN ::: MS' (0S b 2. If the mass of the block is tripled, does the angle of repose change? M~~ ~c~~ _ ~. SIY)t; ~Co$1:i _ {lLhe .~ t.'; 1-0-.11 52 ... ¢ F ¢ 5 co" . (j
3. Why can anti-lock brakes stop a car in a shorter distance than regular brakes? (Comment on the difference between static friction and kinetic friction.)

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