Two wires of equal correction but one is made of steel and the other copper, they are joined end to end. When the combination is placed under a tension , the elongation in the wires is found to be equal. Find the ratio between the original length of steel and copper. ( Y of steel = 2*10^11 Pa , Y of copper = 1.1*10^11 Pa)

Question

anonymous · Answer

it is equal to the ratio of young's moduli

anonymous · Answer

stress=strain * young's modulus.in this case copper and steel wire are under a |dw:1362499816302:dw||dw:1362499902344:dw|tensile stress because they have the same tension and same area of cross section A.now since |dw:1362500027978:dw|