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 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 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)

A cylindrical wire is stretched to increase its length by 10% . Calculate the percentage increase in resistance.

A wire of resistance 10Omega is stretech to thrice its original length. The resistance of the wire will be

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 .

What must be the stress in a stretched steel wire for the speed of longitudinal waves to be equal to 100 times the speed of transverse waves ? (Y for steel = 20xx10^10N/m^3 ).