A section of Magnesium alloy is being tested .It is subjected to 12 kN compression force.The length is 50 mm.The cross section is 10 mm by 10 mm.The longitudinal strain is 1.5*10^-3. The poisson´s ratio for the material is 0.35
a) Find the average normal stress at the instant when the load is applied
B)Find the deformation longitudinal
c)Find the height and width of the cross section after the compression.