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What principle was developed by John Bernoulli in 1717?
Which method is sometimes referred to as the unit-load method?
What must be known in order to uniquely define the corresponding internal displacements?
Which principle ensures that external and internal displacements are related?
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What type of structure does the principle of virtual work provide a means of obtaining displacements and slopes for?
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What is necessary for the external and internal loads in a structure according to the text?
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What is the principle that can still be applied even if a material is strained beyond its elastic limit?
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When a material is strained beyond its elastic limit, what kind of analysis must be used?
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What do the definite integrals on the right side represent in the context of beams?
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Why might a single integration not be possible across a beam's entire length?
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In the context of determining moments in a beam, why should the same x coordinate be used for both virtual and real moments?
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How many regions of a beam must be considered to determine displacements in a complex loading scenario?
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What is the equation of the elastic curve given in the text?
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To obtain maximum deflection, where does it occur according to the information provided?
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What should be set equal to zero to find the location of maximum deflection?
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What is the value of C1 in the equation EI𝑦 = x3 - (x-1)4 + (x-4)4 + (x-6)3 + C1.x + C2?
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What does setting the slope equal to zero help in finding?
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