Horizontal link 2 is subjected to load F = 150 kN at C as shown. The link is supported by the solid circular aluminum link 3. The lengths of the links are L2 = RCA = 5 m, RBA = 3 m, and L3 = RBD =

3 m. End D of link 3 is fixed in the ground, and the opposite end, B, is pinned to link 2 (that is, the effective length of the link is Leff = 0.5 L2). For aluminum, the yield strength is Syc = 370 MPa, and the modulus of elasticity is E = 207 GPa.

Determine the diameter,

d, of the solid circular cross section of link 3 to ensure that the static factor of safety is N = 2.5.

Figure P11.40 Link BD supporting link AC.