A cube-shaped object with a side of 15 cm is placed on a rigid slab between two rigid walls. A distributed load q acting on unit area from above acts on this object as shown in the figure. Calculate the load q that the object can carry and the singular force P equivalent to this load according to the following assumptions. a) Maximum normal stress, b) Maximum shear stress, c) Total strain energy, d) Deformation energy. (Gallowed=200 MPa, v = 0.3) 15 cm 15 cm q N .Z -15 cm y -15 cm X