The rod AB consists of two cylndrical portions AC and BC, made of aluminium
(
E=
70 GPa
,
"{\\alpha}"=
"23.6\\times10^{-6} /^{\\circ}C"
)
and brass
(
E=
100 GPa
,
"{\\alpha}"=
"19\\times10^{-6} /^{\\circ}C"
)
respectively. These rods are joined to one another and rigidly constrained by the walls.
Each has a cross-sectional area of
1000 mm^2
.
Q. Initially stress free, what is the reaction force at end B if the temperature of the assembly is homogenously increased by
25
"^{\\circ}C"
?
Magnitude of Force at B (enter a positive quantity):
Direction of Force at B (click to show choices):
