Q 1. Draw graph of stress strain curve for the given material (Copper)
Explain in details of the curve you have drawn.
4Mark
Q 2. Determine the value of young's modulus of elasticity of a material, whose bulk modulus
is (10Gpa) and the modulus of rigidity is (12Gpa).
2 Mark
Q 3. A steel structure is made up of two different materials as show in figure below, (E1=80 Gpa
and E2=180 Gpa). Assuming the structure is prevented from buckling sideways. Find the value of
force "P" required to cause a total change of 0.30 mm.
4 Mark
Copper Bar of daimeter
80 mm
400 mm
E2
E1
Steel Bar 8 cm X 8 cm
45 CM