The diameter of a wire decreases by `5%` when the wire is subjected to a stress of ` 8 xx 10^10 N/m^2` . If `sigma = 0.5 ` for the material of the wire, find Y .

A metallic wire is subjected to a tension of 400 g wt . If its diameter is 0.5 mm , what is the value of stress exerted upon it ?

A 5 kg wt is suspended from the end of a wire 2.5 m long fixed to a rigid support. The diameter of the wire is 2 mm. If Y = 20 x 10^10 N/m^2 for the material of the wire, find the increase in its length.g = 9.8 m/s^2 .

Strain energy per unit volume of a stretched wire is 5 xx 10^(-3) J/m^3 . If Y = 9 xx 10^10 N/m^2 for the material of the wire , find the tensile stress and strain in the wire .

Young's modulus of the material of a wire is 9.8 x 10^10 N/m^2 and the area of cross-section of the wire is 0.012 cm^2 . Elastic limit of the material of the wire is exceeded when the strain exceeds 1/2400 . Find the maximum load that can be used to stretch the wire without causing a permanent set.

A mass of 4kg is hung from a metal wire of radius 0.5 mm and length 3m. Find the extension produced in the wire. What should be minimum radius of the wire so that the elastic limit of 20 xx 10^7 N/m^2 of the metal wire is not exceeded ? Y=20x10^10N/m^2.

A copper wire 2 m long and having a diameter of 2mm is suspended from a rigid support . The wire is stretched by a load of 5 kg . Find the work done in stretching the wire and the strain energy per unit of its volume. Y = 12 xx 10^10 N/m^2 and g= 9.8 m/s^2 .

A wire having a diameter of 3mm is streached by external force to produce a longitudinal strain of 3xx10^-3 . What will be the change in diameter if the poisson's ratio of the wire is 0.4.