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Mountain roads rarely go straight up to slope but wind up gradually.Explain why?

Mountain roads rarely go straight up to slope but wind up gradually.Explain why?

Grade:12th pass

2 Answers

Arun
25750 Points
4 years ago
When mountain roads go wind up, the slope will be less than when the roads go straight up. So the frictional force is very large when the road winds up. So the tire of the vehicle will not slip easily when the roads go wind up. ... That is why mountain roads rarely go straight up the slope but wind up gradually
 
 
Vikas TU
14149 Points
4 years ago
Dear student 
The basic idea behind making winding roads rather than a straight slope is to keep the angle of ascent as minimum as possible. It follows from the fact that the opposing gravitational force exerted on a body ascending an inclination depends upon the angle of inclination (or ascent). In winding roads the ascending angle is gradually increased from a small initial value. So the force required to move up is greatly reduced. On the other hand, if we were to construct a straight slope to the top the angle of ascent would be larger and consequently larger force would be required. 
Good Luck 

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