“…Figure 2 shows an example of the excel spreadsheet used to solve some proposed problems (Reshetov and Weinstein, 1978). In addition to perform simple and complex calculations, and to help accountants to solve their accounting problems (Cheetancheri and Cheng, 2009), a spreadsheet may also be used for educational purposes to simulate behaviors of different dynamical systems (Ibrahim, 2009), to design worm gears or machines, or to analyze aircraft structures. Excel spreadsheet could also be integrated into several software to develop a complete tools, like the one proposed by Cheetancheri and Cheng (2009) for kinematic and dynamic analysis, graphical plotting, and animation for four bar, crank-slider, five bar, and six bar linkages.…”