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Comments on springs. Several problems ask for computing forces in springs. Recall that a springs force is proportional to its deformed length from resting position. That means if the spring, at rest is length l with a spring constant k, then the final length will be equal to l + (F/k) . This means that the problem may not be explicit, you'll have to dig out the lengths in the equations. The assigned problems however have a lot of symmetry, so it means only one more equation, and you won't have to solve other force equations because they fall out from symmetry. Chapter 1 Power Point.zip Some lecture notes for chapter 1. Use winzip to unzip the presentation Chapter 2 Power Point.zip Some lecture notes for chapter 2 Extended Study 2-16.xls This is a spreadsheet about problem 2-16 we discussed in class. Right-click Save-as and open in Excel. One sheet is devoted to problem discussion, the other to equations and graphs. A good starting point to think about using spreadsheets for solving certain classes of problems. Section 3.1-3.3 These are a series of Power Point Lectures, feel free to view them Gauss elimination process Here is a discussion on Gauss Elimination gelimdisplay.xls Heres a spreadsheet illustrating Gauss Elimination ECIV200Trailer.xls Heres a spreadsheet for calculating trailer and wheel loads, Right-click, Save-as then work on it to fill out the remaining two columns.
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