Steel wire of length 'L' at `40^@C` is suspended from the ceiling and then a mass 'm' is hung from its free end. The wire is cooled down from `40^@C to 30^@C` to regain its original length 'L'. The coefficient of linear thermal expansion of the steel is `10^-5//^@C`, Young's modulus of steel is `10^11 N//m^2` and radius of the wire is 1mm. Assume that `L gt gt` diametere of the wire. Then the value of 'm' in kg is nearly

A copper wire of length l and radius 2 mm is suspended from a fixed support vertically and a mass m is hung from its other end. The wire initially at 30^@C is cooled down to 20^@C to bring it back to its original length l . The coefficient of linear thermal expansion of the copper is 1.7 xx 10^(-5) "'^@C^(-1) . If l >> the diameter of wire,then find the value of m/5 in kg close to nearest integer. Take, g = 10 m//s^2 , Y = 1.1 xx 10^11 N//m^2

A steel wire 2 m long is suspended from the ceiling. When a mass is hung from its lower end, the increase in length recorded is 1 cm . Determine the strain in the wire.

A steel wire 2 m long is suspended from the ceiling. When a mass is hung from its lower end, the increase in length recorded is 1 cm . Determine the strain in the wire.

A steel wire of length 20 cm and uniform cross-section 1mm^(2) is tied rigidly at both the ends. If the temperature of the wire is altered from 40^(@)C to 20^(@)C , the change in tension. [Given coefficient of linear expansion of steel is 1.1xx10^(5) .^(@)C^(-1) and Young's modulus for steel is 2.0xx10^(11) Nm^(-2) ]

A steel wire of length 20 cm and uniform cross-section 1mm^(2) is tied rigidly at both the ends. If the temperature of the wire is altered from 40^(@)C to 20^(@)C , the change in tension. [Given coefficient of linear expansion of steel is 1.1xx10^(5) .^(@)C^(-1) and Young's modulus for steel is 2.0xx10^(11) Nm^(-2) ]

At 40^(@)C a brass wire of 1mm radius is hung from the ceiling. A small mass, M is hung from the free end of the wire. When the wire is cooled down from 40^(@)C to 20^(@)C it regains its original length of 0.2 m the value of M is close to (coefficient of linear expansion and young's modulus of brass are 10^(-5)//.^(@)C and 10^(11)//N//m^(2) respectively g=10ms^(-2))

At 40^(@)C a brass wire of 1mm radius is hung from the ceiling. A small mass, M is hung from the free end of the wire. When the wire is cooled down from 40^(@)C to 20^(@)C it regains its original length of 0.2 m the value of M is close to (coefficient of linear expansion and young's modulus of brass are 10^(-5)//.^(@)C and 10^(11)//N//m^(2) respectively g=10ms^(-2))

A steel wire of length 20 cm and unifrom crossection mm^(2) is tied rigidly at both the ends. If temperature of the wre is altered from 40^(@)C to 20^(@)C , calcutlate the change in tension. Given coeffeicient of linear expansion of steel is 1.1 xx 10^(-5) .^(@)C^(-1) and Young's modulus for steel is 2.0 xx 10^(11) Nm^(-2) .