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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A wire of cross section A is stretched horizontally between two clamps located 2l m apart. A weight W kg is suspended from the mid-point of the wire. If the mid-point sags vertically through a distance x<1 the strain produced is

A wire of cross section A is stretched horizontally between two clamps located 2l m apart. A weight W kg is suspended from the mid-point of the wire. If the mid-point sags vertically through a distance x<1 the strain produced is

then its new length becomes Young's modulus of rubber is 10^4 N/m^2 and area of cross section is 2 cm^2. If force of 2 x 10^5 dyn is applied along its length