3.6p_Vectors - ENGR 211 Lecture 3 ENGR 211 Lecture 3...

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ENGR 211 Lecture 3 Fall 2007 Civil Engineering ENGR 211 Lecture 3 ENGR 211 Lecture 3 • Homework (Eastern Time) Civil Engineering ENGR 211 Lecture 3 ENGR 211 Lecture 3 Review forces – As vectors
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ENGR 211 Lecture 3 Fall 2007 Civil Engineering Springs Springs • Unstretched Length, L 0 = 1 m F = k (L - L 0 ); k = 100 N/m Compression Tension Civil Engineering Math Tools for Statics: Math Tools for Statics: Vectors Vectors Visualization, Addition, Dot Product
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ENGR 211 Lecture 3 Fall 2007 Civil Engineering Vectors are your friends Vectors are your friends • Scalars – magnitude only • All vectors have – magnitude – direction • Vectors representing engineering quantities also have units Civil Engineering Magnitude and Direction Magnitude and Direction Both may be given or may need to be calculated from other given information x y z
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ENGR 211 Lecture 3 Fall 2007 Civil Engineering Visualizing Vectors Visualizing Vectors • A key point: Two vectors that intersect define a plane. Civil Engineering Visualizing Vectors Visualizing Vectors • Key point: Move the vector tail to head for addition.
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ENGR 211 Lecture 3 Fall 2007 Civil Engineering Working with two Working with two vectors vectors …(and a third unknown (and a third unknown vector) vector) sin sin sin abc A BC == B C A
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This note was uploaded on 03/15/2009 for the course ENGR 211 taught by Professor Tona during the Spring '09 term at Oregon State.

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3.6p_Vectors - ENGR 211 Lecture 3 ENGR 211 Lecture 3...

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