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+// Scilab Code Ex8.13: Page-176 (2010)
+c = 3e+008;    // Speed of light in vacuum, m/s
+E = 4.5e+017;    // Total energy of object, J
+px = 3.8e+008;    // X-component of momentum, kg-m/s
+py = 3e+008;    // Y-component of momentum, kg-m/s
+pz = 3e+008;    // Z-component of momentum, kg-m/s
+p = sqrt(px^2+py^2+px^2);    // Total momentum of the object, kg-m/s
+// From Relativistic mass-energy relation
+// E^2 = c^2*p^2 + m0^2*c^4, solving for m0
+m0 = sqrt(E^2/c^4 - p^2/c^2);    // Rest mass of the body, kg
+printf("\nThe rest mass of the body = %4.2f kg", m0);
+
+// Result
+// The rest mass of the body = 4.56 kg 
+\ No newline at end of file