The angles could be given symbols too, but since we know their values it isn't necessary. Rigid Body Equilibrium Support Reactions Prevention of Translation or The 3 equations can not be augmented with Determine the direction of the reaction force. There is always some rela-tive displacement of points in each, every and all bodies a rigid body is as much an abstraction as a friction-less pin. We have chosen the standard coordinate system with positive \(x\) to the right and positive \(y\) pointing up, and resolved force \(A\) into components in the \(x\) and \(y\) directions.\) representing the weight, normal force, and the applied force respectively. Of course, this is all relative in another sense. What does Static Equilibrium mean What are the conditions for a body to be in Static Equilibrium Second Condition of Equilibrium Frequently Asked Questions. Now equate the respective i, j, k components to zero (i.e., apply the three scalar equations of equilibrium). Topics include two- and three-dimensional force systems acting on particles and rigid bodies in equilibrium, analysis of trusses and beams, distributed forces. Apply equilibrium equations to solve for the three unknowns. \) The sense of these components is unknown, so we have arbitrarily assigned the arrowheads pointing left and up. Represent each force in the Cartesian vector form.
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