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3 cards from this section. Quick, good the night before a test.
What is shear stress and how does it distribute in a beam?
Consider where forces are applied and how they affect the beam.
Define the symbol in the shear stress formula.
Think about what kind of stress is present in the beam.
Where is shear stress maximum in a beam under load?
Think about where stress would have the least resistance.
True or False: Shear stress is constant across the entire beam cross-section.
Recall the variation of stress throughout the beam.
A beam with a triangular load creates a shear force of 50 kN at its center. The beam’s width is 150 mm, and its moment of inertia is 2 x 10^6 mm^4. If the first moment of area above the center is 1200 mm³, calculate the maximum shear stress.
Ensure the units are consistent and double-check your calculations.
Discuss how knowing the shear stress can influence the design choices in beam construction.
Think about common materials used in construction.
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