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+//developed in windows 8 operating system 64bit
+//platform Scilab 5.4.1
+//example 29_6w
+
+clc;clear;
+//Given Data
+
+mass=5*10^-3;           //Mass of the particle (Unit: kg)
+charge=1*10^-7;         //Charge of the particle (Unit: C)
+dis=10*10^-2;           //Distance between particle (Unit: m)
+k=9*10^9;               //Value of the coulomb constant (Unit: N m^2/C^2)
+gravity=9.8;            //Value of gravity (Unit: m/s^2)
+
+//calculation
+
+force=charge^2*k/dis^2;                 //Calculation of the force (Unit: Newton)
+coefficient=force/(mass*gravity);       //Calculation of the coefficient of friction (Unit:unitless)
+
+disp(coefficient,"The value of the coefficient of friction between each particle and the table is (Unit: unitless)");