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+//developed in windows XP operating system 32bit
+//platform Scilab 5.4.1
+clc;clear;
+//example 11.9w
+//calculation of the maximum height attained by the particle
+
+//given data
+v0=9.8*10^3//speed(in m/s) the particle is fired
+R=6400*10^3//radius(in m) of the earth
+g=9.8//gravitational acceleration(in m/s^2) of the earth
+
+//calculation
+//by the principle of conservation of energy
+//(-G*M*m/R) + (m*v0*v0/2) = -(G*M*m/(R+H))
+H=(R*R/(R-(v0*v0/(2*g))))-R
+
+printf('the maximum height attained by the particle is %d km',H*10^-3)