Pts : $29$

An element on the top surface of the fuel tanker in Problem $7\mathrm{.}2-1$ is in biaxial stress

and is subjected to stresses

${}_x=6250,{}_y=-1750$

as shown in the figure.

Using Mohr's circle, determine the following:

$($a$)$ The stresses acting on an element oriented at a counterclockwise angle $=55$ from the $x$ axis.

$($b$)$ Sketch the result on a properly oriented element

c$)$ max shear and normal stress

d$)$ show results on sketches of properly oriented elements