$(5$ pts$.)$ A circular bar is compressed axially under a load of $100$ kN and is $50$ mm in diameter. Calculate the stress in the bar.

$(10$ pts$.)$ Find the Moment about Point $A,$ the resultant of the forces, and locate the resultant.

$(10$ pts$.)$ A standard $6^{\text{'}\text{'}}{12}^{\text{'}\text{'}}$ concrete cylinder has an $E=3\mathrm{.}2{10}^6$ psi. Calculate the force necessary to cause a ${0\mathrm{.}002}^{\text{'}\text{'}}$ deformation $($shortening$)$ of the cylinder.

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