(a)
Interpretation:
The modulus of elasticity of mentioned material and its allowed tensile stress needs to be determined.
Concept Introduction:
Modulus of elasticity is as per number of aluminum alloy. Tensile stress is equal to half of the tensile yield stress.
(b)
Interpretation:
The tensile stress and axial load applied on the rod needs to be determined.
Concept Introduction:
Tensile stress can be calculated as follows:
Here,
e = strain
E = Modulus of elasticity.
Similarly, axial load
Here,
A = Cross sectional area
(c)
Interpretation:
The calculated tensile stress needs to be compared with the allowed tensile stress. The absolute value of elongation of rod needs to be determined.
Concept Introduction:
Elongation of rod for allowable tensile stress is calculated as follows:
Here,
S = allowable tensile stress
L = length of rod
E = modulus of elasticity.
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