Question

Hey Too all .....
i have an Interesting and simple question For all of u :-

⭐Tell me Why there R so much stone On Railway Line ....Why these stones are Not in Circular Or Curve Shape ?

⭐And why Metro Lines don't Use Stone In there path ?

Answer 1

HOPE YOU REMEMBER ME.

Railway lines in India have stones in the track to elevate the surface and as well as to give the track a better grip.There could be some other reasons also.

Metros are only familiar to Mega cities.They are not long as railways and use advanced technology to run the metros and help people move around the city.

Hope it helps you.

Answer 2

Train weighs in tonnes. The stones increase the surface area of the lower part of tracks, and since pressure is inversely proportional to area, pressure is reduced, i.e. distributed over a large area.

Analogize it this way, say you have soft soil in a container, and you put two straight rods, which essentially resemble the railway tracks, on that soil. Now, suppose a train passes over the tracks, what do you expect? The track will sink down in the ground.
Now, say you put some pebbles, which resemble the rocks, and repeat the tragedy.
The train passes comparatively smoothly over the soil now.
What happened was that the force that the train was to apply on the soil was distributed over a large area, and P = F/A.

Considering the second part of your query, let's engage some visual calculus.
Say you have a sphere and an ellipsoid.
Which was more surface area?
Squarely, the ellipsoid (If you don't know what am ellipsoid is, it is just a smashed sphere.)
Go back to the same analogy, and the synopsis is that more the surface, more the distribution. So, the rocks are not round, rather irregularly shaped.

Principles involved : Pressure = Force / Area.