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Brittle material has the properties Sut = 30 kpsi and Suc = 90 kpsi. Using the...

Brittle material has the properties Sut = 30 kpsi and Suc = 90 kpsi. Using the brittle Coulomb- Mohr and modified-Mohr theories, determine the factor of safety for the following states of plane stress. a) σx = 25 kpsi, σy = 15 kpsi b) σx = 15 kpsi, σy = -15 kpsi

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