Physics-Circular Motion Dynamics
NEET Physics Circular Motion Dynamics MCQ Question
Type: MCQ-numerical-Medium-Class 11
A car is driving at a speed of 20 m/s on a flat circular track of radius 50 m. What is the minimum coefficient of static friction required between the tires and the road to prevent slipping?
A
0.08
B
0.16
C
0.20
D
0.40
Correct Answer
Option B
Detailed Explanation
The centripetal force required is provided by static friction. Using the formula v^2 = μ_s * g * r, the minimum coefficient of static friction μ_s = v^2/(gr) = (20)^2/(9.850) = 0.16.
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