An iron wire AB of length `3 m` at `0^(@)C` is stretched between the oppsote walls of a brass casing at `0^(@)C`. The diameter of the wire is `0.6mm`. What extra tension will be set up in the wire when the temperature of the system is rasied to `40^(@)C`?
Given `a_("brass")=18xx10^(-6)//k`
`a_("iron")=12xx10^(-6)//K`
`Y_("iron=21xx10^(10)N//m^(2)`

An iron wire AB has diameter of 0.6 mm and length 3 m at 0^(@)C . The wire is now stretched between the opposite walls of a brass casing at 0^(@)C . What is the extra tension that will be set up in the wire when the temperature of the system is raised to 40^(@)C ? Givne alpha_("brass")=18xx10^(-6)//K alpha_("iron")=12xx10^(-6)//K Y_("iron")=21xx10^(10)N//m_^(2)

An iron wire AB has diameter of 0.6 mm and length 3 m at 0^(@)C . The wire is now stretched between the opposite walls of a brass casing at 0^(@)C . What is the extra tension that will be set up in the wire when the temperature of the system is raised to 40^(@)C ? Givne alpha_("brass")=18xx10^(-6)//K alpha_("iron")=12xx10^(-6)//K Y_("iron")=21xx10^(10)N//m_^(2)

A heavy brass bar has projections at its ends as shown in the figure. Two find steel wires, fastened between the projections, are just taut (zero tension) when the whole systeam is at 0^(0)C . What is the tensile stress in the steel wires when the temperature of the systeam is raised to 300^(0)C ? Given that alpha_("brass") = 20 xx 10^(-6 ^(@))C^(-1) alpha_("steel") = 12 xx 10^(-6@)C^(-1) Y_("steel") = 2 xx 10^(11) Nm^(-2)

The resistivity of manganese wire of length 1 m is 1.84xx10^-6Omegam" at "20^(@)C . If the diameter of the wire is 3xx10^-4m , what will be the resistance of the wire at that temperature?

A uniform wire of length 10 m and diameter 0.6 mm is stretched by 6 mm with certain force. If the Poisson's ratio of the material of the wire is 0.3, then the change in diameter of the wire is

A fine steel wire of length 4 m is fixed rigidly in a heavy brass frame as ashown in figure . It is just taut at 20^(@)C . The tensile stress developed in steel wire it whole system is heated to 120^(@)C is :- ( Given alpha _("brass") = 1.8 xx 10^(-5) .^(@)C^(-1), alpha_("steel") = 1.2 xx 10^(-5) .^(@)C , Y_("steel") = 2 xx 10^(11) Nm^(-2), Y_("brass")= 1.7xx10^(7) Nm^(-2) )

A fine steel wire of length 4 m is fixed rigidly in a heavy brass frame as ashown in figure . It is just taut at 20^(@)C . The tensile stress developed in steel wire it whole system is heated to 120^(@)C is :- ( Given alpha _("brass") = 1.8 xx 10^(-5) .^(@)C^(-1), alpha_("steel") = 1.2 xx 10^(-5) .^(@)C, Y_("steel") = 2 xx 10^(11) Nm^(-2), Y_("brass")= 1.7xx10^(7) Nm^(-2) )

A fine steel wire of length 4 m is fixed rigidly in a heavy brass frame as ashown in figure . It is just taut at 20^(@)C . The tensile stress developed in steel wire it whole system is heated to 120^(@)C is :- ( Given alpha _("brass") = 1.8 xx 10^(-5) .^(@)C^(-1), alpha_("steel") = 1.2 xx 10^(-5) .^(@)C, Y_("steel") = 2 xx 10^(11) Nm^(-2), Y_("brass")= 1.7xx10^(7) Nm^(-2) )

A wire of cross sectional area 3 mm^(2) is just stretched between two fixed points at a temperature of 20^(@)C . Then the tension in the wire when the temperature falls to 10^(@)C is, (alpha =1.2 xx 10^(-5) //""^(@)C, Y=2xx10^(11) N//m^(2))