piriro1.Specify the boundary condition for each of the following cases in terms of the chosenx-yframe, i.e.xx,yy,xy,ux,uy.2.The stress state at a point with respect to the coordinate system,x1,x2,x3, is111,222,333, theother stress components being zero. Consider a plane having unit normal vector321eeesnml. (a) Find theshear stress on this plane. (b) Find the values ofl,m, andnsuch that the shear stress at that plane is extremum.Answer:a)2232221223222221nmnm,b) Six solutions: (1)1,0nm, (2)21,21,0nm, (3)21,0,21nm,(4)0,1nm, (5)0,21,21nm, (6)0,1,0nm3.Consider a compositebeam subject to purebending moment. Thebeam is made of twolayers each withathickness ofh.