Class 11PhysicsMechanical Properties of SolidsBasic of Elasticity, Stress and Strain relationship and Graphical analysis
MediumWhy do rail tracks have an '$I$-shaped' girder?
(N/A) Rail tracks are designed with an '$I$-shaped' cross-section to provide maximum structural strength and rigidity with minimum material usage.
By concentrating the material at the top and bottom flanges,the moment of inertia is significantly increased,which minimizes bending or buckling under the heavy load of trains.
The central vertical web provides the necessary depth to resist shear forces while keeping the track lightweight and cost-effective.
By concentrating the material at the top and bottom flanges,the moment of inertia is significantly increased,which minimizes bending or buckling under the heavy load of trains.
The central vertical web provides the necessary depth to resist shear forces while keeping the track lightweight and cost-effective.
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$[\alpha = 5\, \times\, 10^{-5}\,^{\circ}C^{-1},\, Y = 5\, \times\, 10^{11}\, N/m^2]$
$[\alpha = 5\, \times\, 10^{-5}\,^{\circ}C^{-1},\, Y = 5\, \times\, 10^{11}\, N/m^2]$
Easy
View SolutionThe elastic behaviour of a material for linear stress and linear strain is shown in the figure. The energy density for a linear strain of $5 \times 10^{-4}$ is $\dots \; kJ/m^3$. Assume that the material is elastic up to the linear strain of $5 \times 10^{-4}$.
Which one of the following is the weakest kind of bonding in solids?
Identify whether the following statements are True or False:
$(a)$ If a body breaks immediately after the elastic limit,then this body is known as ......
$(b)$ An elastic body which can be stretched to cause large strains is called ......
$(a)$ If a body breaks immediately after the elastic limit,then this body is known as ......
$(b)$ An elastic body which can be stretched to cause large strains is called ......
Easy
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