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Devtycoon
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Homework Statement
A car traveling 10 m/s is moving along a track banked at 5 degrees. The tire-road friction coefficient is .3 What is the minimum radius it can travel without slipping?
v0= 10 m/s
Bank Angle Θ = 5°
μ=0.3
Note I am working through prep material for the exam. The solution in the book skips steps and doesn't make sense.
Homework Equations
Normal and Tangential Kinetics for Planar Problems - FE Exam Reference Guide Page 70 - Dynamics
∑Ft=mat
∑Fn=mvt/ρ , where ρ is the radius of curvature
The Attempt at a Solution
∑Fx=Fc-Fμ
∑Fx=mv2/ρ-μmgcosΘ=0, where Θ=5°
ρ=v2/μgcosΘ=100/.3⋅*9.81⋅cos(5°)=34.1 mNote:
Why is the review manual saying to use the following solution? I do not understand the FΘ term or how it was derived.
Fc=Fμ+Fθ
mv2/ρ=μmg+mg⋅tanΘ
ρ=26m