We have a concrete block with Lame parameter $=11\mathrm{.}5$GPa and $=7\mathrm{.}7$GPa. The block is in

equilibrium subject to internal stresses according to the stress tensor:

$T=([10,-200,0],[-200,100,-10],[0,-10,200])$

Where the components of the tensor are given in Mpa.

c$)$ Give the stress vectors associated to three perpendicular planes of the block oriented

in the directions of the vectors $i,j,k.$

d$)$ Calculate the stress vector for a plane with normal vector $n=\frac{2i-3j+6k}{7}$

e$)$ Calculate the deformation vectors corresponding to the plane cases of c$)$ and d$).$