SOME ANSWERS ARE $($Vy$=-900$ lb$,$ My$=0,$ and sigma largest $=2,297$ psi $($T$)).$ There are other solutions but none of them are correct. Please show all work, thank you. $4\mathrm{.}2$ For the beam shown below,

$($a$)$ At the location where $M$ is largest, give the sign & magnitude of $M_y$&$M_z$ to be used in the general flexure formula.

$($b$)$ At the same location, give the equation of the N$.$A$.$ & sketch it$.$

$($c$)$ Find the magnitude of the largest bending stress & indicate whether it is tension or compression.

$($d$)$ Give the $(x,y,z)$ coordinate where the largest bending stress occurs.

$($e$)$ At the location where $V$ is largest, give the sign & magnitude of $V_y$&$V_z$ to be used in the general shear flow formula.

$($f$)$ Find the magnitude of the largest shear flow.

$($g$)$ Give the $(x,y,z)$ coordinate where the largest shear flow occurs.

Span View

Cross$-$Section View