The dynamic friction coefficient between the vehicle and the road surface is u, and the radius of a road corner is R (assuming that the maximum static friction is equal to the sliding friction, g = 10 / M / s ∧ 2, q) 1 / assuming that the road surface is level, in order to ensure that the car does not slip when turning, how much speed can the car not exceed If the road surface at the turning point of the highway is designed to be high on the outside and low on the inside, so that the road surface and the horizontal plane form an angle of X, at what speed can the car turn, so that there is no friction between the car and the road surface in the radial direction

Centrifugal force = MV ^ 2 / R friction force = MGU
mv^2/R≤mgu v≤√ugR
mg tanx=mv^2/R tanx=(v^2/R/g)
x=atan(v^2/R/g)

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