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Classical Mechanics
Level
2
Friction is not always reliable at circular turns, if high speeds and sharp turns are involved.
False
True
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1 solution
To avoid dependence on friction, the roads are banked at the turn so that the outer part of the road is somewhat lifted up as compared to the inner part.
Roads are banked for the average expected speed of the vehicles. If the speed of a particular vehicle is a little less or a little more than the correct speed, the self adjustable static friction operates between the tyres and the road and the vehicle does not skid or slip.