Abanked circular highway curve is designed for traffic moving at 58 km/h. the radius of the curve is 201 m. traffic is moving along the highway at 37 km/h on a rainy day. what is the minimum coefficient of friction between tires and road that will allow cars to take the turn without sliding off the road? (assume the cars do not have negative lift.)

0.077

Explanation:

Given

banked designed for traffic moving at

Radius of the curve 201 m

Actual traffic velocity =

For banking of road

Centripetal acceleration is given by

Taking component of centripetal acceleration

along and perpendicular to surface

From FBD

----1

where is frictional force

----2

and we know coefficient of friction is given by

powerful computers now, not then

this is poiselle's equation from fluid mechanic in physics. mech eng