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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 20 m without skidding

A

5m/s

B

7m/s

C

10 m/s

D

14 m/s

Text Solution

Verified by Experts

The correct Answer is:
B
`mu mg =m v^(2)// or v=sqrt( mu g r)`
`or v= sqrt((0.25xx9.8xx20))= 7m//s`
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