Question: The measured strains with an electric rectangular rosette indicates that 0 = - 0 . 0 0 0 5 , 4 5 = + 0

The measured strains with an electric rectangular rosette indicates that 0=-0.0005,45=+0.002,90=+0.0003. Taking E=2105Nmm2&=0.3, find the principal stresses at the point.
The measured strains with an electric rectangular

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