Chapter 4. Equilibrium Under the Action of Concurrent Forces. CONCURRENT FORCES. Concurrent forces are forces whose lines of action all pass through a common point. . The forces acting on a point object are concurrent because they all pass through the same point, the point object. EQUILIBRIUM.
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Equilibrium Under the Action of Concurrent Forces
(1) Isolate the object for discussion.
(2) Show the forces acting on the isolated object in a free-body diagram.
(3) Find the rectangular components of each force.
(4) Write the first condition for equilibrium in equation form. (Actually write Newton’s Second Law and set the acceleration equal to zero.)
(5) Solve for the required quantities.
Statement in text is confusing at best. Examples will be discussed as they occur.