A metal wire is 2.5mm diameter and 2m long. A force of 12N is applicd to it and it stretches 0.3mm. Assume the material is elastic. Determine the following: 1.1 The stress in the wire a. (4) 1.2The strain in the wire . (4) Question 2 A 42mm thick plate made of low carbon sleel is to be reduced to 34mm in one pasa in a rolling operation. As the thickness is redueed, the plate widens by 4%. The yield strength of the steel plate is 174MPa, and the tensile strengih is 290MPa. The entrance speed of the plale is 15m/min, the roll radius is 325mm, and the rolalional speed is 49 revimin. Delemine : 2.1 The min mum required coeficient of fiction lhat would make this relling operation posede (4) 2.2Th=xidelobly ol die plale. (4) (4)