Questions And Answers

Q-1) a steel bar 3 m long and 200 mm^2 in cross-sectional area. due sudden load stress of 60 N/mm^2 is produced. find the force

Answer: Here A=200 mm2=200X10-6m2 δl=60N/mm2=60X106N/m2 stress strain δl=F/A so forse F=Aδl=200X10-6 X 60X106=12000N=12KN