Lecture+08

# Lecture+08 - 440:221 Intro to Engineering Mechanics Statics...

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440:221 Intro to Engineering Mechanics: Statics 1 Fall 2011 Based on Textbook Material: Engineering Mechanics Statics, 12 th Edition, R.C. Hibbeler, Pearson 2010. Alberto Cuitino, Po Ting Lin Instructors Arturo Villegas Assistants

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440:221 Lectures School of Engineering, Fall 2011 Topics to be covered • Moment Vectors • Physical interpretation • How to use vector algebra to compute moment vectors 2
440:221 Lectures School of Engineering, Fall 2011 Moments in 3-D can be calculated using scalar (2-D) approach but it can be difficult and time consuming. Thus, it is often easier to use a mathematical approach called the vector cross product . Using the vector cross product, M O = r × F . Here r is the position vector from point O to any point on the line of action of F . moment of a force – vector formulation

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440:221 Lectures School of Engineering, Fall 2011 M O = r × F moment of a force – vector formulation
440:221 Lectures School of Engineering, Fall 2011 moment of a force – vector formulation

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440:221 Lectures School of Engineering, Fall 2011 moment of a force – vector formulation (Cartesian components)
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Lecture+08 - 440:221 Intro to Engineering Mechanics Statics...

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