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Unformatted text preview: 1 2 3 4 x x x x F F F F + + + = xcomponents 1 2 3 4 y y y y F F F F + + + = ycomponents 1 2 3 4 z z z z F F F F + + + = zcomponents Component Form ME 221 Lecture 8 7 Statically Determinate • For 3D equilibrium, there are three scalar equations: Σ F x = 0 , Σ F y = 0 , Σ F z = 0 • Problems with more than three unknowns cannot be solved without more information, and such problems are called statically indeterminate. ME 221 Lecture 8 8 Freebody Diagram A freebody diagram is a pictorial representation of the equation Σ F = 0 and has: – all of the forces represented in their proper sense and location – indication of the coordinate axes used in applying Σ F = 0 ME 221 Lecture 8 9...
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 Summer '08
 Buch
 Statics, Equilibrium, Force, freebody diagram, F3, Matrix Form F1, Statics Lecture

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