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.

References in periodicals archive ?
This he readily admits in his introduction, and it follows a dictum of Winston Churchill quoted frequently in the book to describe the challenges of espionage work: "All things are always on the move simultaneously." The combatants all had similar objectives and goals: develop advanced weapons, break one another's codes, and understand the size and composition of forces opposing them, to name a few.
Senior officers from the rival parties have held a week-long workshop in the Ethiopian capital, Addis Ababa, on the ceasefire deal and security arrangements, but could not agree on the size and composition of forces and joint integrated police that should remain or be deployed in the national capital, Juba.
Her chapter on Go Down, Moses contends that its widely debated lack of 'the traditional frame of successive or logical order' reflects Bergsonian concepts, and she quotes Bergson to describe the novel's form: 'Faulkner's "new pattern", a joint formal and thematic design that set [sic] the segments inside one another, secures "the interplay" of "a conflict" of elements that also resolves into "a composition of forces"' (p.
As attacks continue to be waged against terrorist targets, the exact composition of forces will ebb and flow to meet the need.