Two persons pull a rope towards themselves. Each person exerts a force of  on the rope. Find the Young's modulus of the material of the rope if it extends in length by . Original length of the rope  and the aea of cross-section .

What per cent of length of wire increases by applying a stress of  weight  on it?

 and  weight  newton  

A metallic rod breaks when strain produced is . The Young's modulus of the material of the rod is . What should be its area of cross-section to support a load of  ?

Two wires are made of the same material and have the same volume. However first wire has cross-sectional area  and second wire has cross-sectional area . If the length of first wire increases by  on applying force , how much force is needed to stretch second wire by the same amount?       

Two wires A and B of same material and of equal length with the radii in the ratio  are subjected to identical loads. If the length of  increases by , then the increase in length of  is    

A steel wire of length  and cross section area  is stretched by  under a given load. When the same load is applied to another steel wire of double its length and half of its cross section area, the amount of stretching (extension) is

Two wires are made of the same material and have the same volume. However wire 1 has cross-sectional area  and wire 2 has cross-sectional area . If the length of wire 1 increases by  on applying force , how much force is needed to stretch wire 2 by the same amount?

A steel wire and a copper wire of equal length and equal cross-sectional area are joined end to end and the combination is subjected to a tension. Find the ratio of the stresses developed in the two wires and  of steel . Y of copper .

A steel wire of cross-sectional area  can with stand a maximum strain of . Young's modulus of steel is . The maximum mass the wire can hold is:               

A structural steel rod has a radius of  and length of . A  force stretches it along its length. Young's modulus of structural steel is . The percentage strain is about