The force-couple system shown can be replaced by a single equivalent couple CR. Determine CR. Can be done in two ways: using the fact that the 80 N can be split into 50+30, we have a 50 N-forces couple and a 30 N-forces couple and the 15 Nm couple.Then add the moments. OR simply compute moments about any point, let us use B. 720 mm 80 N M80 0.48k × (–80i) -38.4j 480 mm M30 15000 N mm M50 -0.72j × 50i = 36k 50 N MGiven -15j 30 N CR -53.4j + 36k Nm

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Numerical Calculations

In the mid-20th century, the availability and the growth in power of digital computers led to the increase in the mathematical model in the field of engineering and science. The analysis of these detailed models needs to be increased.