arning Goal: $$

hen a force is applied to an object, it produces a deformation along the axis of the applied force. The object will also deform along

es perpendicular to the applied force. As long as the response of the material remains elastic, the relationship between the strains it

gative sign indicates that axial stretching leads to lateral contraction while allowing Poisson's ratio to be a positive number.

Part A $-$ Calculate Poisson's ratio

A square steel bar has a length of $7\mathrm{.}4$ ft and a $29$ in by $2\mathrm{.}9$ in cross section and is subjected to axial tension. The final length is $740671$ ft $.$ The final side length is $289907$ in $.$ What is Poisson's ratio for the material?

Express your answer to three significant figures.

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$u=0\mathrm{.}354$

Subintil

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Part B $-$ Calculate the load

Express your answer with appropriate units to three significant figures.

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Subr

Correct

Part C$-$Maximum load

A slider with a square hole is mounted on the bar described in part B $($Figure $1).$ The largest load the bar ever carries is $102$ kip. What is the minimum side length of the square hole so that it will not bind on the bar?

Express your answer with appropriate units to six significant figures

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