Question:
Why are mountain roads generally made winding upwards rather than going straight up?
Solution:
The mountain roads are generally made winding upwards rather than going straight up because the force of friction is high which reduces the chances of skidding. When
the roads are straight up, the value of frictional force increases which increases the chance of skidding. This is given by:
fs = μN cosθ where θ is the angle of inclination.