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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View SolutionMatch List-$I$ with List-$II$ :
List-$I$ List-$II$ $(A)$ $A$ force that restores an elastic body of unit area to its original state $(I)$ Bulk modulus $(B)$ Two equal and opposite forces parallel to opposite faces $(II)$ Young's modulus $(C)$ Forces perpendicular everywhere to the surface per unit area same everywhere $(III)$ Stress $(D)$ Two equal and opposite force perpendicular to opposite faces $(IV)$ Shear modulus
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
|---|---|
| $(A)$ $A$ force that restores an elastic body of unit area to its original state | $(I)$ Bulk modulus |
| $(B)$ Two equal and opposite forces parallel to opposite faces | $(II)$ Young's modulus |
| $(C)$ Forces perpendicular everywhere to the surface per unit area same everywhere | $(III)$ Stress |
| $(D)$ Two equal and opposite force perpendicular to opposite faces | $(IV)$ Shear modulus |
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