09_24_2004_eq_probls_single_obj

# 09_24_2004_eq_probls_single_obj - Include as much...

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General equilibrium problems – single “object” A Draw a GOOD free body diagram 1. Make a clear distinction of the “body” (system) Separate it from other parts, including the ground 2. Sketch a contour of your “free body” 3. Identify all external forces and external couples Include The ground (if touching the ground) Its weight (unless negligible) More generally, other bodies and force fields Do not include Internal forces Forces exerted by the chosen free body Forces between parts within chosen system 4. Draw all external forces and couples on the body,

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Unformatted text preview: Include as much information as you can: Point(s) of application (where known) Direction (where known) Magnitude (when known) 5. Include dimensions / directions wherever possible 6. Extraneous information (other than that mentioned above) should be left out B Express external forces and couples in coordinates C Solve equilibrium equations: = ∑ F v and for some chosen P: 1 1 = + × ⇒ = ∑ ∑ ∑ = = C F i N i i N i i PA P C F r M v v v r = ∑ x F , = ∑ y F , = ∑ z F...
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09_24_2004_eq_probls_single_obj - Include as much...

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