From longest to shortest ecure https/ 7237227 Homework 1- Stress and Strain 9 of

Question

From longest to shortest

ecure https/ 7237227 Homework 1- Stress and Strain 9 of 10> Part B-Thermal Deformation Externally applied mechanical forces acting on a body, such as normal and shear forces, will cause deformation dopendent on n temperature can cause t dimensions the characteristics of that body and the mognitudes of the applied feroes Similaly deformation (ie, expansion or contracsion) as particles and bonds inside the o material undergo changes in energy For simple geamatries, the changes in volume ave propetional In the line ?x5an beams below is subjected to a 20 ee cha gente peatre Rank the nem s based on he total ageningnang te ingindhebaa sovpayensch imino, are significantly affected by changes in temperature, especially when compared to the metal and mineral materials discussed here To a lesser degree, soft metals ewise are signlicanily affected by temperat changes. For example when heated lead expands almost a third more than aluminum and almost twice as much gold However, hard metals and materials, auch as platinum and quartz do not deform response to temperature Because platinum is a metal, it will deform almost nine times more than quartz signicanty n Rank the beams from the longest to shortest final length. View Available Hints) Lead Tc-20 Quartz AT. +20? Aluminum Te +20"C Platinum Polyethylene AT= +20"C Gold T +20C honest O Type here to search

Explanation / Answer

Correct order of elongation due to temperature change is:

polyethylene > Lead > Gold > Aluminum > Platinum > Quartz.

Explanation:

Since polyethylene is significantly affected by the temperature to the max, it has highest elongation.

Lead elongates trice as aluminum and twice that of Gold so, Gold elongates 1.5 times of aluminum .

So order of these expansion is Lead > Gold > aluminum.

Platinum deformes 9 times to Quartz. So order of elongation is Platinum > Quartz.

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