The wires AB and AC are made of steel, and wire AD is made of copper. Before the 150-lb fo...

The wires AB and AC are made of steel, and wire AD is made of copper. Before the 150-lb force is applied, AB and AC are each 60 in. long and AD is 40 in. long. If the temperature is increased by 80°F, determine the force in each wire needed to support the load. Take Est = 29(103 ) ksi, Ecu = 17(l03)ksi, cvsl =8(10“6)/°F, acu = 9.60(10-6 )/°F. Each wire has a cross-sectional area of 0.0123 in2.