A) \[36\,\text{kgf/c}{{\text{m}}^{\text{2}}}\] Compression
B) \[36\,\text{kgf/c}{{\text{m}}^{\text{2}}}\] Tension
C) \[72\,\text{kgf/c}{{\text{m}}^{\text{2}}}\] Compression
D) \[72\,\text{kgf/c}{{\text{m}}^{\text{2}}}\]Tension
Correct Answer: C
Solution :
Maximum hoop stress in the inner cylinder \[({{\sigma }_{\theta }})i=\frac{2r_{3}^{2}{{p}_{s}}}{(r_{3}^{2}-r_{q}^{2})}\] \[=\frac{2\times {{6}^{2}}\times 11}{({{6}^{2}}-{{5}^{5}})}=-\,72\]
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