The extruded plastic shape has dimensions of D-22 mm, d - 16 mm, a-86 mm, and t - 4 mm. (a) Determine the magnitude of the horizontal shear stress at point A for a shear force of V-315 N. (b) If the allowable shear stress for the plastic material is 2100 kPa, what is the magnitude of the maximum shear force V that can be applied to the extrusion? N Answer: (a) TA- (b) V- kPa N

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