A copper wire 8 cm long is stretched to produce an extension of 0.8 cm in it . Find the lateral strain produced in the wire if `sigma` of copper is 0.20 .

The strain produced in a wire of length 60 cm is 1% . The change in the length of the wire is

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 flexible wire 80cm long has a mass of 0.4gm . It is stretched by a force of 500N. Find the velocity of the transverse wave in the string .

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 .