The bell crank shown is in equilibrium. (a) Determine the required diameter of the connecting rod AB if its axial stress is limited to 120 MPa. (b) Determine the shearing stress in the pin D if its diameter is 20 mm. B 30° -260 mm- 180 mm 3 2 D 140°. 28 KN DOUBLE SHEAR

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Planar Stresses