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Lecture+20

# Lecture+20 - 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 Frames and machines 2
440:221 Lectures School of Engineering, Fall 2011 Topics to be covered • How to draw the free body diagram of a frame or machine and its members. • How to determine the forces acting at the joints and supports of a frame or machine? 3

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440:221 Lectures School of Engineering, Fall 2011 1. Frames and machines are different as compared to trusses since they have ___________. A) Only two-force members B) Only multiforce members C) At least one multi-force member D) At least one two-force member 2. Forces common to any two contacting members act with _______ on the other member. A) Equal magnitudes but opposite sense B) Equal magnitudes and the same sense C) Different magnitudes but opposite sense D) Different magnitudes but the same sense C) C) Reading Quiz A) A)
440:221 Lectures School of Engineering, Fall 2011 How is a frame different than a truss? To be able to design a frame, you need to determine the forces at the joints and supports. Frames are commonly used to support various external loads. Applications

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School of Engineering, Fall 2011 How can you determine the loads at the joints and supports? These forces and moments are required when designing the machine members. “Machines,” like those above, are used in a variety of applications.
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Lecture+20 - 440:221 Intro to Engineering Mechanics Statics...

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