Distance between two places is `200km`. `alpha` of metal is `2.5 xx 10^(-5//@)C`. Total spece that must be left between steel rails to allow a change of temperature from `36^(0)F` to `117^(0)F` is

Distance between two places is 200 km. alpha a of steel is 12xx10^(-6)//""^(@)C . Total space that must be left between steel rails to allow for a change of temperature from 36^(@)F to 117^(@)F is

A steel rod of length 5 m is fixed between two support. The coefficient of linear expansion of steel is 12.5 xx 10-6//^(@)C . Calculate the stress (in 10^(8) N//m2 ) in the rod for an increase in temperature of 40^(@)C . Young's modulus for steel is 2 xx 10^(11) Nm^(-2)

Span of bridge is 2.4 km. At 30^@C a cable along the span sags by 0.5 km. Taking alpha=12xx10^(-6)//^@C , change in length of cable for a change in temperature from 10^@C to 42^@C is

Span of bridge is 2.4 km. At 30^@C a cable along the span sags by 0.5 km. Taking alpha=12xx10^(-6)//^@C , change in length of cable for a change in temperature from 10^@C to 42^@C is

Railway lines are laid with gaps to allow for expansion. If each line is 10 m long at 20^@C , what should be the length of the gap to be kept between two rails to allow for expansion if the maximum temperature that can be reached is 50^@C ? (alpha_(steel)=1.2 xx 10^-6//^@C)

Steel railroad tracks are laid when the temp is 20^@C . A standard section of rail is 12m long. Calculate the gap that should be left between rail sections so that there may not be any compression when the temperature gets as high as 50^@C . ( alpha of steel = 11xx10^-6 per^@C )

Two fines steel wires , fastened between the projectors of a heavy brass bar, are just taut when the whole system is at 0^(@)C . What is the tensile stress in the steel wires the temperature of the system is raised by 200^(@)C ? ( alpha_("glass") = 2 xx 10^(-5) ^(@)C ^(-1), alpha_("steel") = 1.2 xx 10^(-5)"^(@)C^(-1) , Y_("steel") = 200GNm^(-2) )