3. A state of plane stress consists of a tensile stress of o=3 MPa, o,=5 MPa, and txy=-7 MPa a. Draw the original unrotated element and the corresponding 2-D Mohr's

circle construction showing the x-face and y-face coordinates. b. Calculate the principal stresses, oi and 02 and their corresponding principal angles,O,1,0,2 and show all of these on your Mohr's circle construction and a properly oriented stress element. c. Calculate the maximum shear stresses, ±TMAX and their corresponding angles of maximum shear stress, 031,0,2 and show all of these on your Mohr's circle construction and a properly oriented stress element.