A wire of length 2 m with the area of cross section `10^(-6) m^(2)` is used to suspend a load of 980 N. Calculate (i) The stress developed in the wire (ii) the strain and (iii) the energy stored . Given `Y = 12 xx 10^(10) Nm^(-2)`.

A copper wire of length 2 m and area of cross-section 1.7xx10^(-6)m^(2) has a resistance of 2xx10^(-2)Omega. The resistivity of copper is

The resistance of a wire of length 10 m is 2 ohm. If the area of cross section of the wire is 2xx10^(-7)m^(2) , determine its (i) resistivity (ii) conductance and (iii) conductivity

A light rod of length 2m is suspended horizontally by means of 2 vertical wires of equal lengths tied to its ends. One of the wire is made of steel & is of cross section A_(1) = 0.1 cm^(2) & other of brass & is of cross section A_(2) = 0.2 cm^(2) , find out the position along the rod at which a weight must be suspended to produce (i) equal stresses in both wires, (ii) equal strains in both wires for steel, y = 20 xx 10^(10)Nm^(-2) & for brass y = 10 xx 10^(10) Nm^(-2) .

A steel wire of length 2.0 m is stretched through 2.0 mm. The cross sectional area of the wire is 4.0 mm^2. Calculate the elastic potential energy stored in the wire in the stretched condition. Young modulus of steel =2.0x10^11Nm^-2

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 a. The stresses developed in the two wire and b. the strains developed. Y of steel =2xx10^11Nm^-2 . Y of copper =1.3xx10^11 Nm^-2 .

A wire of length 2m and cross-sectional area 2 xx 10^(-6) m^(2) is made of a material of Young's modulus 2 xx 10^(11) Nm^(-2) . What is the work done in stretching it through 0.1 mm.

The force required to stretch a steel wire 1 cm^2 in cross section to double its length is (given Y = 2 xx 10^(11) Nm^(-2)) ………. .

A thin rod of negligible mass and area of cross sectional 4 xx 10^(-6)m^(2) , suspended vertically from one end has a length of 0.5 at 100^(@)C the rod is cooled at 0^(@)C , but prevented from contracting by attaching a mass at lower end. Find (i) mass (ii) the energy stored in rod. Given for rod, y = 10^(11) Nm^(-2) , coefficient of linear expansion = 10^(-5) k^(-1) & g = 10 ms^(-2) .

A wire 10 m long has a cross-sectional area 1.25 xx 10^(-4) m^(2) . It is subjected to a load of 5 kg. If Young's modulus of the material is 4 xx 10^(10) N m^(-2) , calculate the elongation produced in the wire. Take g = 10 ms^(-2)