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# lec1 - 2.001 MECHANICS AND MATERIALS I Lecture#1 Prof Carol...

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2.001 - MECHANICS AND MATERIALS I Lecture #1 9/6/2006 Prof. Carol Livermore A Frst course in mechanics for understanding and designing complicated systems. PLAN ±OR THE DAY: 1. Syllabus 2. Review vectors, forces, and moments 3. Equilibrium 4. Recitation sections BASIC INGREDIENTS O± 2.001 1. ±orces, Moments, and Equilibrium Statics (No acceleration) 2. Displacements, Deformations, Compatibility (How displacements Ft to- gether) 3. Constitutive Laws: Relationships between forces and deformations Use 2.001 to predict this problem. HOW TO SOLVE A PROBLEM RULES: 1. SI inits only . 2. Good sketches. Labeled coordinate system.

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Labeled dimensions and forces. 3. Show your thought process. 4. Follow all conventions. 5. Solve everything symbolically until the end. 6. Check answer Does it make sense? Check trends. Check units. 7. Convert to SI, plug in to get answers. VECTORS, FORCES, AND MOMENTS Forces are vectors (Magnitude and Direction) F ± = F x ˆ i + F y ˆ j + F z k ˆ OR F ± = F x i ˆ + F y j ˆ + F z k ˆ Where do forces come from?
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lec1 - 2.001 MECHANICS AND MATERIALS I Lecture#1 Prof Carol...

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