Composition of Forces


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Composition of Forces

 

the operation of finding the vector quantity R equal to the vector sum of the vectors representing the forces of a given system. R is known as the resultant of the system of forces. The operation is performed according to the rule for addition of vectors—in particular, by plotting a polygon of forces. The mechanical meaning of the quantity R is determined by theorems of statics and dynamics. Thus, if the system of forces acting on a solid has a resultant, the system is equivalent to the resultant. When any mechanical system moves, its center of mass moves as would a point mass whose mass is equal to the mass of the entire system and is under the action of a force equal to the resultant of the external forces acting on the system.

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Four senior military officers each from president Salva Kiir's government and the armed opposition faction led by former vice president, Riek Machr, would lead the workshop to discuss demilitarization of the capital, Juba, and determine the size and composition of forces to be deployed in the national capital as well as in other state capitals, among others.