gf

import java.lang.Math;
import java.util.Scanner;

public class Gravitation_Force{
   public static void main(String[]args){
      final double G = 6.67;
      final double P_K = 0.453592;
      //F = G*(m1*m2)/r^2
      System.out.println("Pounds(1) or Kilos(2)?");
      int input = Expo.enterInt();
      switch(input)
      {
      case(1): System.out.println("Pounds");
               System.out.println("Enter m1 and m2");
               double m1 = Expo.enterDouble();
               double m2 = Expo.enterDouble();



               double m1k = m1*P_K;
               double m2k = m1*P_K;

               System.out.println("Enter distance");
               double r = Expo.enterDouble();
               double a = (m1k*m2k)/r*r;
               double f = G*a;

               System.out.println("The gravitational attraction beetwenn mass 1 and mass 2 is " + f);

      break;
      case(2): System.out.println("Kilos");
               System.out.println("Enter m1 and m2");
               double k1 = Expo.enterDouble();
               double k2 = Expo.enterDouble();


               System.out.println("Enter distance");
               double r1 = Expo.enterDouble();
               double a1 = (k1*k2)/r1*r1;
               double f1 = G*a1;

               System.out.println("The gravitational attraction beetwenn mass 1 and mass 2 is " + f1);

      break;
      default: System.out.println("Non-Recognized");
      break;
      }
   }
}