Question

A block of metal with a Young's Modulus of E=70GPa and Poisson's ratio of 0.3, has dimensions of 41x20x60 mm for the lengths X, Y and Z respectively as illustrated in

Figure Q10. The block experiences a tensile force in the x-direction of 250kN and also an applied tensile force in the z-direction of 50kN as illustrated in Figure Q10. Calculate the change in length experienced in the x-direction in terms of x10³ milli-metres. Stating your answer to the nearest whole number. 250 kN 50 kN X mm Y mm Figure Q10 Z mm X 50 kN 250 kN (5 marks)

Fig: 1