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A compression member of 20in effective length consists of a solid 1in diameter aluminum rod In order to reduce the weight of the member by 25% the solid rod is replaced by a hollow rod of the

A compression member of 20-in. effective length consists of a solid
1-in.-diameter aluminum rod. In order to reduce the weight of the
member by 25%, the solid rod is replaced by a hollow rod of the
cross section shown. Determine (a) the percent reduction in the
critical load, (b) the value of the critical load for the hollow rod.
Use E 5 10.6 3 106 psi.
 

Jun 29 2020 View more View Less

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