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Motzu2098
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Homework Statement
A car giving a turn on a curve with 88m of radius, traveling at a speed of 95km/h, the curve is perfectly banked for a car traveling at 75 km/h, meaning that the curve has an angle θ of 26.7º.
Homework Equations
μ = ?
r = 88m
v = 26.38 m/s
θ = 26.7º
Ff = μ · g · m
Fc = m (v^2/r)
Fg = m · g
The Attempt at a Solution
Hoping that The FBD is right, I came up with
ΣFy = FNy - mg - Ffy = 0
= FN cos θ - mg - FN μ f sin θ = 0
FN cos θ - FN μ f sin θ = mg
FN (cos θ - μ sin θ) =mg
FN = (mg)/(cos θ - μ sin θ)
then I used the FN = Fc, which I substituted to (mg)/(cos θ - μ sin θ) = m(v^2/r).
And then, for what I understand, masses cancel each other.
g/(cos θ - μ sin θ) = (v^2/r)
The problem is that I am stuck, I do not know how to transform the equation for solving for μ. nor if the procedure I've followed this far is right. (seems right to me)