Question

Multiple Choice ( Select 1 out of 4 options, for the question below.)
A steel bar 100 mm long is subjected to a tensile stress if the change in length of the bar is (1/20) mm, what will be the value of stress. E=2x10
N/mm​

Answer 1

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Answer 2

Answer:

100 N/mm2

Explanation:

e= dl/l= (1/20)/(100)= 5 x 10^-4

E=(sigma)/e

(sigma) = (E x e) = (2 x 10^5) x (5 x 10^-4) = 100N/mm2