Civil Engineering - Theory of Structures - Discussion

40. 

A steel bar 5 m x 50 mm is loaded with 250, 000 N. If the modulus of elasticity of the material is 0.2 MN/mm2 and Poisson's ratio is 0.25, the change in the volume of the bar is :

[A]. 1.125 cm3
[B]. 2.125 cm3
[C]. 3.125 cm3
[D]. 4.125 cm2

Answer: Option C

Explanation:

No answer description available for this question.

Srinu said: (Dec 6, 2016)  
Ch in vol= (p ÷ae)(1-2u)V.

Bhushan said: (Jan 5, 2018)  
Here, Ch in volume=3 (Pl/E) (1-2m).

Shuva said: (Mar 22, 2018)  
Yes, right agree @Srinu.

Ram said: (Mar 23, 2018)  
How?

Please explain.

Sourabh said: (Dec 13, 2018)  
Please explain the answer in detail.

Imtiaz Hakim said: (Apr 1, 2020)  
@ALL.

hERE a steel bar 5m length and 50mm dia...then the original volume will be Pid2/4 multiply length = .01m3.

Now change in volume = 25000รท( .002 * .2 *10^6) multiply (1-2*.25).01 = 3.125cm3.

Archana said: (Jul 17, 2021)  
Can anyone explain the answer in detail?

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