Do with 100 % surety, this question posted second time as first one is wrong.
Extracted text: 0,55 A homogenous isotropic material of size 20 cm x 20 cm x 20 cm is placed inside a rigid box of internal dimension 20 x 20 x 20 cm. The top of the box is open and the material inside is subjected to a uniform compressive stress of 10 N/mm? from the top. Assuming there is no friction between the surface of contact, find the stresses on the side faces of the material. Also find maximum shear stress, the normal stresses on the plane of maximum shear stress and the change of volume of the material. Young's modulus E is 1 x 105 N/mm? and Poisson's ratio m = 0.3 for the material. 10 N/mm 20 cm 20 cm-