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5. A load of 6,700 N acts on the machine part shown in Fig. 5a. The machine part has a uniform thickness of 15 mm (i.e., 15-mm thickness in the z direction). Determine the normal and shear stresses acting at points H and K, which are shown in detail in Fig. 5b. For each point, show these stresses on a stress element. 10 mm 50 mm 135 mm 40° 50 mm 40 mm B Fig. 5a D KD 40 mm Но 15 mm Fig. 5b 40 n