Answer to Question #345880 in Physics for seph

Question

A curve in a road has a radius of 240 m. If the road surface is level and on a  

               rainy day the coefficient of static friction is 0.48, what is the maximum speed 

               at which the car can negotiate this curve? 

            

         

Answer 1

$$ma=F$$

$$\frac{mv^2}{R}=\mu m g$$

$$v=\sqrt{\mu g R}\\ =\sqrt{0.48*9.8*240}=33.6\:\rm m/s$$