(b) A member of a stainless steel structure is 5 m long and has a cross-sectional area of 1000 mm². What is the greatest pull which can be applied if the elongation is not allowed to exceed 3.0 mm? Assume the Young's Modulus E = 200 kN/mm2. (9 marks) A steel hollow tube of 140 mm outside diameter, 70 mm inside diameter and 10 m long is used on a bridge and subjected to a tensile load of 200 kN. If the Young's Modulus is 100 kN/mm², calculate :- i. the stress in the material and; ii. the amount that the tube will be stretched. (6 marks) (6 marks) 140 mm 3310 70 mm 10 m