First slide
Stress and strain

A uniform rod is rotating about one of its end with a constant angular velocity ω in gravity free space. The radial strain produced in two halves is k>1. Then find the value of 20k11.


dL=TAYdx=22ALYdx  T=22LL2-x2 L=22ALYL2x-x33 L for entire rod=k.2L33=k = constant L for first half =kL312-124=11kL324 L for second half=kL323-1124=524kL3 k=115 20k11=4

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