The compound bar, composed ot the three segments shown, is initially stress-free. Compute the stress in the Aluminum segment if the temperature drops 25°C. Assume that the walls do not yield and use...

the compund bar, composed of the three segsemnt shown, is initially stree-free.
a.)
compute the stress in aluminum segment if the temperature drops at 25 degrees.
b)
compute the force resisted by the steel.
c)
compute the stress in the steel.
d)
compute the stress in bronze. assume that the walls do not yield and use the following data

Extracted text: The compound bar, composed ot the three segments shown, is initially stress-free. Compute the stress in the Aluminum segment if the temperature drops 25°C. Assume that the walls do not yield and use the following data: A (mm²) E (GPa) a (/°C) 11.7x106 Steel 800 200 Bronze 1400 19.0 x10-6 83 Aluminum 2000 23. 0 x10-6 70 800 mm 500 mm- 400 mm- Steel Bronze Aluminum