Let tension be TA in A and TB in B.The equilibrium of rod suggests that moment of wand TB about P must be balanced. Hence
The stress in the wire A is given by
The stress in the wire Bis given by
(b) Equal stresses in the two wires means
Putting the values of TA and TB ,
(c) Equal strains in the two wires means
Putting the values of TA and TB ,