A uniform steel wire of cross-sectional area `0.20 mm^2` is held fixed by clamping its two ends. Find the extra force exerted be each clamp on the wire if the wire is cooled from `100^0C to 0^o C`. Young's modulus of steel `= 2.0 xx 10^11 N m^(-2)`. Coefficient of linear expansion of `=1.2 xx 10^(-5) C^(-1)`.

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 rod is clamped at its two ends and rests on a fixed horizontal base. The rod is unstrained at 20^@C . Find the longitudinal strain developed in the rod if the temperature rises to 50^@C . Coefficient of linear expansion of steel =1.2 xx 10^(-5)C^(-1) .

There is a change in length when a 33000 N tensile force is applied on a steel rod of area of cross - section 10^(-3) . The change of temperature required to produce the same elongation, if the steel rod is heated, is (modulus of elasticity of steel =3xx10^(11)N//m^(2) , coefficient of linear expansion of steel =1.1xx10^(-5)//^(@)C ........................

A steel rod of cross sectional area 4cm^2 and length 2m shrinks by 0.1 cm as the temperature decreases in night. If the rod is clamped at both ends during the day hours, find the tension developed in it during night hours. Young modulus of steel =1.9xx10^11 Nm^-2

A pendulum clock consists of an iron rod connected to a small, heavy bob. If it is designed to keep correct time at 20^(0) C , how fast or slow will it go in 24 hours at 40^(0) C? Coefficient of linear expansion of iron = 1.2 xx 10^(-5)C^(-1) .

A steel wire of cross-sectional area 0.5mm^2 is held between two fixed supports. If the wire is just taut at 20^@C , determine the tension when the temperature falls to 0^@C . Coefficient of linear expansion of steel is 1.2 xx 10^(-5)C^(-1) and its Young's modulus is 2.0 xx 10^11 N m^(-2).

A steel rod is rigidly clamped at its two ends. The rod is under zero tension at 20^@C . If the temperature rises to 100^@ C , what force will the rod exert on one of the clapms? Area of cross section of the rod = 2.00 mm^2 . Coefficient of linear expansion of steel = 12.0 xx 10^(-6)C^(-1) and Young's modulus of steel 2.00 xx 10^(11) N m^(-2) .

One end of a wire 2m long and 0.2 cm^2 in cross section is fixed in a ceiling and a load of 4.8 kg is attached to the free end. Find the extension of the wire. Young modulus of steel =2.0xx10^11Nm^-2 . Take g=10ms^-2 .

A current 4.0 A exist in a wire of cross-sectional area 2.0 mm^(2) . If each cubic metre of the wire contains 12.0xx10^(28) free electrons, then the drift spped is