A $20,000-$pound load is applied to a two$-$inch diameter steel bar that is made from AISI $1040$ ColdDrawn steel $(10$ points$).$

a$.$ What kind of stress is developed in the bar?

compression

b$.$ By how much did the bar shorten?

c$.$ Will this bar return to its original length when the load is removed? Please indicate the reason.

Yes,

$1S$ Yield strength HEs :

Select a round bar to be constructed from an AISI $1020$ hot$-$rolled steel to support the $500$ lb ball. Assume a safety factor of $3,$ and determine the deflection for the size selected. Use the yield strength.

$11$

$12$

$**30{10}^6$

$$

$S=\frac{F}{A}=\frac{20,000}{\frac{(2{)}^2}{4}}$

$=6366\mathrm{.}19$

$2.$

and to $-0\mathrm{.}15$ m