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Question

Two-dimensional stress system on a block made of a material with Poisson's ratio of 0.3 is shown in the figure


The limiting magnitude of the stress so as to result in no change in length AB of the block is

A
60 N/mm2
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B
120 N/mm2
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C
200 N/mm2
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D
240 N/mm2
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Solution

The correct option is C 200 N/mm2
For no change in length
εL=0
i.e., σxEμσyE=0
σy=σxμ=600.3=200 MPa
So, option (c) is correct.

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