The force of static friction between a car\'s tires and the road is what provide

Question

The force of static friction between a car's tires and the road is what provides the centripetal force necessary to maintain a turn.
A level curve has a radius of 43 meters.
Under normal (dry) conditions, the maximum speed which at which a car can safely make the turn is 77 km/h.

A/ What is the coefficient of static friction between the tires and the road?

B/ When the road becomes wet, the coefficient of static friction decreases to 0.40.
What is the maximum speed which the car could safely take the curve when wet?

Explanation / Answer

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