A car is moving with a constant speed v around a level curve. The coefficient of friction between the tires and the road is 0.40. What is the minimum radius of curve if the car is to stay on the road?

Minimum radius of the curve to stay on the road will be equal to          

Explanation:

We have given coefficient of kinetic friction

Acceleration due to gravity

We have to find minimum radius of the curve so that car will stay on the road

For the car to stay on the road centripetal force must be equal to frictional force

So

So minimum radius of the

So minimum radius of the curve to stay on the road will be equal to

abstract class Mark  //Creating an Abstract class{

abstract double getPercentage();}

class A extends Mark{

double result;

A( int val1, int val2, int val3){

 result=(val1+val2+val3)/3;}

double getPercentage(){

 return result;}}

class B extends Mark{

double result;

B(int val1, int val2, int val3, int val4){

 result=(val1+val2+val3+val4)/4;}

double getPercentage(){

 return result;}}

class Main{

public static void main(String args[]){

 //class A Object

 Mark obj_1=new A(10,20,30);

 System.out.println(obj_1.getPercentage());

 //class B Object

 Mark obj_2=new B(10,20,38,46);

 System.out.println(obj_2.getPercentage());}}