Using the same ply given in Problem $2,$ you need to design a laminate. This

time, strength values are also given. You need to keep the ply stack to be

symmetric as $[(0)/(+)-\backslash$theta $]\_($S$)$ where $\backslash$theta angle can be varied $(0<mi>\backslash </mi>$theta $<mi>(</mi><mi>\backslash </mi>$pi $)/(2)).$ The

laminate is applied with Nx of $-100,000[($N$)/($m$)]$ and Ny of $-200,000[($N$)/($m$)].$

a$(()/($bar$)(\backslash$epsi $)\_($x$)(,)/($b$)$ar $(\backslash$epsi $)\_($y$)(,)/($b$)$ar $(\backslash$gamma $)\_($xy$))$ when $\backslash$theta is $20$ degrees, $40$ degrees, and $60$ degrees. Briefly

explain how and why strain values changes with $\backslash$theta $.$

b$\backslash$theta is set as $40$ degrees, evaluate the first ply failure of the laminate using Tsai$-$Hill criteria.