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[" Ins."Y=(1)/(A times Delta L)" of "r-R...

[" Ins."Y=(1)/(A times Delta L)" of "r-RA-LT=A" ,AISo "dE=EAC" .A and "r_(2)" respectively.When they "],[" 9.Two rods "A" and "B" of the same material and same length have radiied at the other end,find the ratio of "],[" are rigidly fixed at one end and twisted by the same couple applied at the other end,find the ratio of "],[" the angles of twist at the ends of "A" and "B" ."]

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