A cable and pulley system at D is used to bring a 230-kg pole (ACB) to a vertical position as shown in the figure part (a). The cable has tensile force T and is attached at C. The length L of the pole is 6.0 m, the outer diameter is d = 140 mm, and the wall thickness t = 12 mm. The pole pivots about a pin at A in figure part (b). The allowable shear stress in the pin is 60 MPa and the allowable bearing stress is 90 MPa.
Find the minimum diameter of the pin at A in order to support the weight of the pole in the position shown in the figure part (a).

Transcribed Image Text:

Pold 1.0 m Cable 30° Pulley 5.0 m 4.0 m C1 ACB Pin Pin support plates