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Question: 12 txy 0 the grain of a wood structure forms...

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12 Txy 0 The grain of a wood structure forms an angle theta- 24 deg with the vertical as shown. The the stress normal to the grain is sigma-X--5.6 MPa and the stress parallel to the grain is tau_X -8.4 MPa. Determine the state of stress in the x-y system in MPa: (a) sigma x and (b) sigma y if tau xy-0. Also determine the principle stresses (c) sigma_I and (d) sigma II and (e) the maximum shear stress tau _max.

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