Question Detail
Question
What is the maximum speed at which an automobile can negotiate a flat curve of radius 100 m without sliding if the coefficient of static friction is 0.7? (Take g = 9.8 m/s²)
Correct Answer
Option A is the correct answer.
Detailed Explanation
Using the formula v = √(μgr) derived from μ g = v²/r, we get v = √(0.7 * 9.8 m/s² * 100 m) = √(686) ≈ 26.2 m/s.
Hint
The maximum speed is found by v = √(μ g r).