The major principal stress and deviator stress at a point are 100 kPa and 60 kPa, respectively. Indicate the magnitude of the minor principal stress. What is the value of the maximum shear stress and...

The major principal stress and deviator stress at a point are 100 kPa and 60 kPa, respectively. Indicate the magnitude of the minor principal stress. What is the value of the maximum shear stress and of the normal stress acting on the same plane? (Deviator stress is the algebraic difference between the values for the principal stresses.)