4-39. The load of

2800lb

is to be supported by the two essentially vertical

A-36

steel wires. If originally wire

AB

is

60in

. long and wire

AC

is 40 in. long, determine the crosssectional area of

AB

if the load is to be shared equally between both wires. Wire

AC

has a cross-sectional area of

0.02in^(2)

.

4-39. The load of 2800lb is to be supported by the two essentially vertical A36 steel wires. If originally wire AB is 60in. long and wire AC is 40in. long, determine the crosssectional area of AB if the load is to be shared equally between both wires. Wire AC has a cross-sectional area of 0.02in2