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 requiredto produce the sameelongation, 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........................

There is a change in length when a 33000 N tensile force is applied on

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 requiredto produce the sameelongation, 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........................
Answer» `20^(@)C` `15^(@)C` `10^(@)C` `0^(@)C` Solution :`Deltal=alpha l Deltat=(FL)/(AY)` `Deltat=(Fl)/(alpha AY)=(33000)/(1.1xx10^(-5)xx10^(-3)xx3xx10^(11))rArr Deltat=10^(@)C`