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The flow limit of commercial-grade aluminum is given as σ = 120 MPa, the modulus of...

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Mechanical Engineering

The flow limit of commercial-grade aluminum is given as σ = 120MPa, the modulus of elasticity is E = 70 GPa and the density is 2.7gr / cm3.
a) There is a 4mm diameter and 3m long wire which made with thismaterial. How many N should be applied to make this wire 3mmlonger?
b) If a 4 mm diameter wire made of this material is hung from theceiling, what should be the total length of the wire to carry itsown weight without plastic deformation?

just please step-by-step because it's too important for me.thanku so muc

Answer & Explanation Solved by verified expert
3.6 Ratings (466 Votes)
Givenstress 120 MPa 120Nmm2Modulus of    See Answer
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