The lap joint is connected together using a $1\mathrm{.}27-$in$.-$diameter bolt. $($Figure $1)$

Figure

$1$ of $2$

Part A

If the bolt is made from a material having a shear stress$-$strain diagram that is approximated as shown in $($Figure $2),$ determine the permanent shear strain in the shear plane of the bolt when an applied force of $P=150$ kip is removed

Express your answer in radians to three significant figures.