What's Banking Of Roads?
Maybe you have noticed that when a road is straight, it is horizontal too. However, when a sharp turn comes, the surface of the road does not remain horizontal. This is called banking of the roads.
Why This Banking Of Roads?
Purpose of banking :-
1. To contribute in providing necessary centripetal force.
2. To reduce frictional wear and tear of tyres.
3. To avoid skidding
4. To avoid overturning of vehicles.
How Can We Use It?
What we really wish is that even if there is no friction between the tyres and the road, yet we should be able to take a round turn. In the given figure Vertical N cos θ component of the normal reaction N will be equal to mg and the horizontal N sin θ component will provide for the necessary centripetal force. Frictional forces will not act in such a case.Need To Make,μ = 0
.·. N cos θ = mg .......... (i)
N sin θ = mv2/r .......... (ii)
Dividing equation (ii) by (i), we get
tan θ = v2/rg
where θ is the angle of banking.
[Please note that as we are assuming μ to be zero here, the total reaction of the road will be the normal reaction.]
What Happen Will Ocur Without Banking?
We don't realize that how needy the banking of road is!Let's See...
If this roads are made with banking then there is no danger in this roads.
See this one...
See This Road,it's Made With Banking
How Can We Get Rid Of It?
1. Taking necessery step by goverment
2. By increasing concious among people
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