Calc Coeff of Friction for 60km/h on 150m Curve

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SUMMARY

The discussion focuses on calculating the banking angle and the minimum coefficient of friction for a highway curve designed for vehicles traveling at 60 km/h on a 150m radius curve. The correct banking angle was determined to be 11 degrees using the formula tan-1(v2/(gR)), where v is 16.6 m/s, g is 9.8 m/s2, and R is 150m. For the minimum coefficient of friction required to prevent skidding on a flat curve, the user suggested using tan(11) to find a friction value of 0.1944.

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  • Knowledge of friction coefficients and their calculations
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A circular curve of highway is designed for traffic moving at 60km/h. Assume the traffic consists of cars without negative lift. (a). If the radius of the curve is 150m, what is the correct angle of banking of the road? (b) If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 60km/h?....for part (a). i used tan-1 (v2)/(gR)...i got v= 16.6m/s...g=9.8m/s2...R=150m...answer i got 11 degrees...what equation would i use for part (b)... :confused:
 
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iam thinking for part (b) i would use tan(11)= .1944 for the friction...am i doing this correctly...?
 

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