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3 cards from this section. Quick, good the night before a test.
What is a positive moment defined as in structural analysis?
Think about the direction of rotation.
Name the two types of coordinate systems used in structural analysis.
One corresponds to overall structure, the other to elements.
What does a positive moment signify in structural analysis?
Think about the direction when defining moments.
True or False: The global coordinate system uses lowercase axis labels.
Remember the distinction between global and local labels.
Given a truss structure with various loading conditions, determine the sign conventions for all moments around each node given both counter-clockwise and clockwise applied forces.
Draw the truss and label forces carefully.
Write a small program snippet that computes the moments in a beam based on a given set of forces, utilizing the defined sign conventions. Explain your approach.
Define your positive rotation carefully in the code comments for clarity.
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