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Unformatted text preview: Statics:The Next Generation (2nd Ed.) Mehta, Danielson & Berg Lecture Notes for Sections 4.14.4 1 EQUATIONS OF EQUILIBRIUM (Section 5.3) A body is subjected to a system of forces that lie in the xy plane. When in equilibrium, the net force and net moment acting on the body are zero (as discussed earlier in Section 5.1). This 2D condition can be represented by the three scalar equations: F x = 0 F y = 0 M O = 0 Where point O is any arbitrary point. Please note that these equations are the ones most commonly used for solving 2D equilibrium problems. There are two other sets of equilibrium equations that are rarely used. For your reference, they are described in the textbook. x y F 1 F 2 F 3 F 4 O As a general rule, if a support prevents translation of a body in a given direction, then a force is developed on the body in the opposite direction. Similarly, if rotation is prevented, a couple moment is exerted on the body....
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This note was uploaded on 05/23/2010 for the course PHYSICS PCS211 taught by Professor Juan during the Winter '09 term at Ryerson.
 Winter '09
 juan
 mechanics, Force

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