A and B are two steel wires and the radius of A is twice that of B. If they are stretched by the same load, then the stress on B is .....

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four times that of A. (rA=2rB) ............(1) therefore stress=F/A stress prop1/r^2 `therefore (stress_A)/(stress_b)=r_B^2/r_A^2 "Stress of B"=r_A^2/r_B^2 xx " stress of "A "Stress of B"=(2r_B)^2/r_B^2 xx " stress of "A` .............. from equation 1 `"Stress of B"=(4r_B^2)/r_B^2 xx " stress of "A "Stress on B"=4* "Stress on A"`

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