Lecture+12 - 440:221 Intro to Engineering Mechanics:...

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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 • What is the difference between a distributed and a concentrated load? • Can a distributed load be simplified as a concentrated load? When? • How do we find equivalent concentrated load? • Where is the application point? • How do we find it? 2
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440:221 Lectures School of Engineering, Fall 2011 Reduction of a simple distributed loading 3
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440:221 Lectures School of Engineering, Fall 2011 2. The line of action of the distributed load’s equivalent force passes through the ______ of the distributed load. A) Centroid B) Mid-point C) Left edge D) Right edge 1. The resultant force (F R ) due to a distributed load is equivalent to the _____ under the distributed loading curve, w = w(x). A) Centroid B) Arc length C) Area D) Volume x w F R Distributed load curve Preliminary Questions (reading quiz) C) Area C) Area A) Centroid A) Centroid
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School of Engineering, Fall 2011 To analyze the load’s effect on the steel beams, it is often helpful to reduce this distributed load to a single force. How would you do this? There is a bundle (called a bunk) of 2” x 4” boards stored on a storage rack. This lumber places a distributed load (due to the weight of the wood) on the beams holding the bunk. Applications …
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This note was uploaded on 09/25/2011 for the course ENGINEERIN 221 taught by Professor Cuitino during the Spring '10 term at Rutgers.

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Lecture+12 - 440:221 Intro to Engineering Mechanics:...

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