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 copper wire is stretched by one percent of its length. What is the energy stored per unit volume of the wire if Y for its material is 11 xx 10^10 N/m^2 .

A steel wire of diameter 1 mm and length 2 m is stretched by a force of 2kg .wt , what is the increase in the length of wire ? (Y = 2 xx 10^11 N/m^2,g = 9.8m/s^2)

How much will a steel wire 2m long and 1mm diameter stretch under a 5 kg wt. load ? (Y = 2 xx 10^11 N/m^2)

The radius of a copper rod is 4 mm . What force is required to stretch the rod by 10 percent of its length ? Y for copper = 12 xx 10^10 N/m^2 .

An aluminium wire and a steel wire both of the same length and cross-section are joined end to end . The composite wire is hung from a rigid support and a load is suspended from the free end . If the increase in length of the composite wire is 2.7 mm, find the increase in length of each wire. Y_al = 7 xx 10^10 N/m^2 and Y_steel = 2 xx 10^11 N/m^2 .

What force is required to stretch a steel wire of cross- section 1sq cm to double its length (Y = 2 x 10^11 Nm^-2)

What mass must by suspended from free end of steel wire of length 2m and diameter 1 mm to stretch it by 1 mm ? (Y = 2 xx 10^11 N/m^2,g = 9.8m/s^2)

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 .