Discussion
Assertion (A): Every cell of a multi-cell box must be assigned the same rate of twist.
Reason (R): The cells are joined along common webs and cannot rotate independently.
Select the correct answer from the options below.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. The cells share webs and belong to one continuous structure, so they must twist together. Setting the rate of twist equal for every cell supplies exactly the compatibility equations needed to solve for the individual cell shear flows, which equilibrium alone cannot determine.
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