A steel wire 2mm in diameter is stretched between two clamps, when its temperature is `40^@C` Calculate the tension in the wire, when its temperature falls to `30^@C` Given, coefficient Y for steel ` = 21 xx 10^(11) dyn e//cm^2`, coefficient for steel= 11 x 10^(-6).

A steel wire 2mm in diameteris ust streched between two dixed point at a temperature of 20^(@)C . Determine its tension when its temperature falls to 10^(@)C . Linear expansivity of steel =11 xx 10^(-6)//K, Young modulus =2 xx 10^(11)//m^(-2)

A steel wire 2 mm in diameter is just stretched between two fixed points at a temperature of 20^(@)C. If the temperature falls to 10^(@)C, then the tension in the wire is (The coefficient of linear expansion of steel = 11xx10^(-6)//^(@)C and Y for steel 2.1 xx10^(11)N//m^(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))

A steel wire 2 mm is diameter is just stretched between two fixed points at a temperature of 20^(@)C . If the temperature falls to 10^(@)C , then the tension in the wire is (Coefficient of linear expansion of steel (alpha) is 11xx10^(-6)//""^(@)C and Y_(s)=2.1xx10^(11)N//m^(2) )

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

A steel wire of corss sectional area 0.5mm^(2) is held between two rigid clamps so that it is just taut at 20^(@)C . Find the tension in the wire at 0^(@)C . Given that Young's Modulus of steel is Y_(st)=2.1xx10^(12) dynes/ cm^(2) and coefficient of linear expansion of steel is alpha_(st)=1.1xx10^(-5).^(@)C^(-1)

A wire of cross-sectional area 3 mm^(2) is first stretched between two fixed points at a temperature of 20^(@)C . Determine the tension when the temperature falls to 10^(@)C Coefficient of linear expansion alpha=10^(-5).^(@)C^(-1) and Y =2 xx10^(11) N//m^(2)

A steel wire of unifrom cross-section 1 mm^(2) is heated to 70^(@)C and strechted by tying it two ends rigidly. Calculate the change in tension on the wire when temperature falls form 70^(@)C to 35^(@)C

A clock with a steel pendulum gives accurate time at 30^@C . Calculate the fractional loss or gain in time if temperature changes to 50^@C . Coefficient of linear expansion of steel = 12 xx 10^(-6) ""^@C^(-1)

A steel wire of length 20 cm and uniform cross-sectional area of 1 mm^(2) is tied rigidly at both the ends at 45^(@)C . If the temperature of the wire is decreased to 20^(@)C , then the change in the tension of the wire will be [Y for steel = 2 xx 10^(11 Nm^(-2) , the coefficient of linear expansion for steel = 1.1 xx 10^(-5)//.^(@)CC^(-1) ]