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Mechanical Engineering
Timoshenko, Strength of materials example solution
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[QUOTE="akmkeng, post: 6028910, member: 648625"] English is not my first language, so sorry for probably unclear use of words. In the language I learned physics in, we use the term of balancing forces, stresses etc, a lot. I don't really get it still. 1) Why do we only account for deflection due to 1 P in the middle section, when there are clearly 2 equal P forces of opposite direction acting on the middle section. 2) Also, if we say that top and bottom sections go along with the middle section due to its shrinking due to P, then why can't we look at it the other way, saying, the elongation on top and bottom sections is due to Q+P(I see that directions of Q and P are opposite, but the act on the opposite ends of the same section, thus sort of stretching it, isn't it?)? Because clearly P is acting on the border between middle and top/bottom sections. [/QUOTE]
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Timoshenko, Strength of materials example solution
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