Question

The coefficient of friction between the rubber tyres and the roadway is 0.25. Find the maximum speed with which a car can be driven
round a curve of radius 20m without skidding​

Answer 1

Given

coefficient of friction between the rubber tyres and the roadway = 0.25.

Radius of the curve = 20m

To Find:

Maximum speed with which a car can be driven

Solution:

Assuming g = 10ms−2

Centripetal Force = Frictional Force

Thus, mv²/r = umg or

v = √urg

v = √ 0.25 × 40 × 10

v = √ 100

v = 10

Answer: The maximum speed will be 10m/s

Answer 2

Explanation:

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