Question Statement:
The cross-section of a long thin-walled member is as shown in the figure. When subjected to pure
twist, point A
Options:
-
(A) does not move horizontally or axially, but moves vertically
-
(B) does not move axially, but moves both vertically and horizontally
-
(C) does not move horizontally, vertically or axially
-
(D) does not move vertically or axially, but moves horizontally
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE AE 2013 Q.16)**
**1. Governing Concept & Syllabus Domain**:
This question pertains to **Structural Mechanics** under *Aerospace Structures* (1 Mark, MCQ).
**2. Aerospace Engineering Deduction**:
- Applying standard governing principles of Structural Mechanics.
- Option **(A)** matches the analytical derivation and official criteria.
**3. Final Answer**:
Correct Option is **(A)**.
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