At a point in a stressed material, the major principal stress is 80 psi compression and the minor principal stress is 20 psi compression. (a) Draw the Mohr’s circle for this stress combination. (b)...

At a point in a stressed material, the major principal stress is 80 psi compression and the minor principal stress is 20 psi compression.

(a) Draw the Mohr’s circle for this stress combination.

(b) What is the maximum shear stress acting at the point, and what value of normal stress acts on this same plane?

(c) Determine the value of the normal and shear stress acting on a plane that is 60° clockwise (cw) from the minor principal plane.