A beam CE is supported by a hinge at C and a link DF as shown. The link AF and DF are made of 2 25 mm x 60 mm steel. The link BF is made of 50 mm x 60 mm steel. The modulus of elasticity of steel is 200,000 MPa. In all connections (A, B, C, D, and F), 50-mm diameter pins are used. Determine, a) Reactions at A, B, and C. b) Average normal stresses in AF, BF, and DF. c) Average shear stresses on the pins at A, B, and D. d) Internal forces at G. 125N 125 N