Question: Consider the specimen in Problem 12.1b. a. What are the principal stresses at failure? b. What is the inclination of the major principal plane with

Consider the specimen in Problem 12.1b.
a. What are the principal stresses at failure?
b. What is the inclination of the major principal plane with the horizontal?
In problem 12.1b
For a normal stress of 180 kN / m2, what shear force is required to cause failure?

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