Concept explainers
How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 125 m at a speed of 95 km/h?
The coefficient of static friction between the tires and the road.
Answer to Problem 8P
Solution:
Co-efficient of static friction must be equal to or greater than
Explanation of Solution
Given:
Radius of curve
Speed of car
Formula used:
Centripetal acceleration
v : speed,
r : radius of circular path.
Calculation:
Apply Newton’s law in vertical direction
Conclusion:
Hence, coefficient of static friction must be equal to or greater than 0.57.
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Physics: Principles with Applications
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