A block of wood is tested in direct shear using the loading frame and test specimen shown in the figure. The load P produces shear in the specimen along plane AB. The height “h” of plane AB is 50 mm and its width (perpendicular to the plane of drawing) is 100 mm. If the load P = 16 kN, what is the average shear stress in the wood? Express the answer in MPa. why some answers are 6.40mpa and others are 3.2mpa? im confused

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