Each of the two vertical links CF connecting the two horizontal
members AD and EG has a 10 3 40-mm uniform rectangular
cross section and is made of a steel with an ultimate strength in
tension of 400 MPa, while each of the pins at C and F has a
20-mm diameter and are made of a steel with an ultimate strength
in shear of 150 MPa. Determine the overall factor of safety for the
links CF and the pins connecting them to the horizontal
members.