A steel plate with modulus of elasticity E = 30 ( 106 psi and Poisson's ratio v = 0.30 is loaded in biaxial stress by normal stresses (x and (y (see figure). A strain gage is bonded to the plate at an angle ( = 30o. If the stress is (x 18,000 psi and the strain measured by the gage is ( = 407 ( 10-6, what is the maximum in-plane shear stress (Tmax)xy and shear strain ((max)xy? What is the maximum shear strain in the plane? What is the maximum shear strain ((max)yz in the yz plane?

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