What Is the Safest Speed for a Banked Curve with Ice?

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SUMMARY

The safest speed for a vehicle navigating a banked curve with a radius of curvature of 120 meters and a banking angle of 3.5° on an icy road is determined by the absence of friction. The relevant equation for this scenario is m(v²/r), where 'm' is mass, 'v' is velocity, and 'r' is the radius. Since the road is icy, the static friction coefficient is effectively zero, necessitating a calculation based solely on the banking angle and radius. For precise calculations, refer to the resources provided, such as HyperPhysics.

PREREQUISITES
  • Understanding of centripetal force and motion dynamics
  • Familiarity with the concept of banking angles in physics
  • Knowledge of basic trigonometry related to angles and forces
  • Ability to interpret and apply physics equations, specifically m(v²/r)
NEXT STEPS
  • Calculate the maximum safe speed for banked curves using the formula for frictionless motion
  • Explore the effects of different banking angles on vehicle stability
  • Research the role of static friction coefficients in various road conditions
  • Study real-world applications of banked curves in highway design
USEFUL FOR

Students studying physics, civil engineers involved in road design, and automotive safety analysts focused on vehicle dynamics in icy conditions.

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Homework Statement



A curve in a highway has radius of curvature 120 m and is banked at 3.5°. On a day when the road is icy, what is the safest speed to go around the curve?
_________ m/s



Homework Equations



m(v^2/r)?


The Attempt at a Solution



How are you suppose to find this if you don't know the static friction coefficient?
 
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