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1. 11.7 stability of equilibrium once the equilibrium configuration for a body or system of connected bodies are defined, it is sometimes important to investigate the type…
1. 5.3 equations of equilibriumfor equilibrium of a rigid body in 2d,∑fx = 0; ∑fy = 0; ∑mo = 0∑fx and ∑fy represent the algebraic sums of thex and y components…
1. 5.5 equilibrium in threedimensions (fbd)consider types of reaction that can occur at thesupportssupport reactionsimportant to recognize the symbols used torepresent each…
1. 2.6 addition and subtraction of cartesian vectorsexamplegiven: a = axi + ayj + azkand b = bxi + byj + bzkvector additionresultant r = a + b = (ax + bx)i + (ay + by )j…
7.4 cables7.4 cables � flexible cables and chains are used to support and transmit loads from one member to another � in suspension bridges and trolley wheels, they carry…
1. chapter 1general principlesengineering mechanics: statics 2. chapter objectivesto provide an introduction to the basic quantities andidealizations of mechanics.to give…
1. 9.6 fluid pressureaccording to pascal’s law, a fluid at rest creates apressure ρ at a point that is the same in alldirectionsmagnitude of ρ measured as a force per…
1. 5.2 free-body diagramsfbd is the best method to represent all theknown and unknown forces in a systemfbd is a sketch of the outlined shape of thebody, which represents…
1. 6.6 frames and machinescomposed of pin-connected multi-forcemembers (subjected to more than twoforces)frames are stationary and are used tosupport the loads while machinescontain…
1. 6.2 the method of jointsfor design analysis of a truss, we need toobtain the force in each of the membersconsidering the fbd, the forces in themembers are internal forces…
1. 3.4 three-dimensional force systemsfor particle equilibrium∑f = 0resolving into i, j, k components∑fxi + ∑fyj + ∑fzk = 0three…
1. 6.4 the method of sectionsused to determine the loadingswithin a bodyif a body is in equilibrium, any partof the body is in equilibriumto determine the forces within themembers,…
1. 2.3 vector addition of forceswhen two or more forces are added,successive applications of theparallelogram law is carried out to find theresultanteg: forces f1, f2 and…
1. 2.4 addition of a system of coplanar forcesfor resultant of two or more forces: find the components of the forces in the specified axes add them algebraically form the…
1. 4.6 moment of a couplecouple- two parallel forces- same magnitude but opposite direction- separated by perpendicular distance dresultant force = 0tendency to rotate in…
1. 8.2 problems involving dryfrictiontypes of friction problemsin all cases, geometry and dimensions areassumed to be knownthree types of mechanics problem involvingdry friction-…
1. 10.9 mass moment of inertia mass moment of inertia of a body is the property that measures the resistance of the body to angular acceleration mass moment of inertia is…
1. 5.7 constraints for a rigid body to ensure the equilibrium of a rigid body, it is necessary to satisfy the equations equilibrium and have the body properly held or constrained…
1. 4.1 moment of a force – scalar formationmoment of a force about a point or axis – ameasure of the tendency of the force tocause a body to rotate…
1. 7.1 internal forces developed in structural members the design of any structural or mechanical member requires the material to be used to be able to resist the loading…