1. The problem statement, all variables and given/known data A car travelling 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. 2. Relevant 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 3. 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 m Note: 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 Note: Thanks for the help. I don't understand the solution and my attempt is the wrong answer.