Question: A plane stress element has x = 1 2 0 MPa, y = 6 0 MPa, and x y = 4 0 MPaccw, as shown

A plane stress element has x=120MPa,y=60MPa, and xy=40MPaccw,
as shown in given figure. (a) Using Mohr's circle, find the principal stresses and
their directions. Also calculate maximum shear stresses. (b) Repeat part (a) using
transformation equations.
A plane stress element has x = 1 2 0 MPa, y = 6 0

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