Civil Engineering - GATE Exam Questions - Discussion

44. 

A vertical rod PQ of length L is fixed at its top end P and has a flange fixed to the bottom end Q. A weight W is dropped vertically from a height h(< L) on to the flange. The axial stress in the rod can be reduced by

[A]. increasing the length of the rod
[B]. decreasing the length of the rod
[C]. decreasing the area of cross-section of the rod
[D]. increasing the modulus of elasticity of the material

Answer: Option A

Explanation:

No answer description available for this question.

Jay said: (May 21, 2019)  
Stress is propotional to strain and (strain=PL/AE) thus reduction in length will decrease strain which will reduce stress.

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