(b) In the diagram below Fig Q2(b), forces are applied along three different axes to a 100 mm cube of aluminium, denoted as resulting in a uniform stress of 5.5 GPa, applied uniformly across the entire surface area of cach face. Cube with cross-section F area A Fig Q2(b) Symbol for modulus Aluminium K 62 GPa 69 GPa 24 GPa E G (i) Identify the appropriate modulus of elasticity to be applied and explain why. Using the correct modulus, determine the percentage volume change for the cube, compared to its original volume.

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(b) In the diagram below Fig Q2(b), forces are applied along three different axes to a 100 mm cube of
aluminium, denoted as resulting in a uniform stress of 5.5 GPa, applied uniformly across the
entire surface area of each face.
Cube with
cross-section
area A
Fig Q2(b)
Symbol for modulus
Aluminium
K
62 GPa
69 GPa
24 GPa
G
(1) Identify the appropriate modulus of elasticity to be applied and explain why.
Using the correct modulus, determine the percentage volume change for the cube, compared
to its original volume.
Transcribed Image Text:(b) In the diagram below Fig Q2(b), forces are applied along three different axes to a 100 mm cube of aluminium, denoted as resulting in a uniform stress of 5.5 GPa, applied uniformly across the entire surface area of each face. Cube with cross-section area A Fig Q2(b) Symbol for modulus Aluminium K 62 GPa 69 GPa 24 GPa G (1) Identify the appropriate modulus of elasticity to be applied and explain why. Using the correct modulus, determine the percentage volume change for the cube, compared to its original volume.
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