A metal wire of length L, area of cross-section A and Young's modulus Y is stretched by a variable force F such that F is always slightly greater than the elastic forces of resistance in the wire. When the elongation of the wire is l
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CHECK THE SOLUTION.
(a, c, d)
For r A = 2r B , S B = 
S A = 
.
As the stresses are equal, either may break.
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