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The coefficient of friction between the ...

The coefficient of friction between the tyres and the road is 0.25. The maximum speed with which a car can be driven round a curve of radius 40 m without skidding is (Take `g = 10 ms^(-2)`)

A

`40 ms^(-1)`

B

`20 ms^(-1)`

C

`15 ms^(-1)`

D

`10 ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Given :` r= 40 m, mu = 0.25 ,g = 10 ms^(-2)`
` therefore v_(max ) = sqrt(mu g r) = sqrt(0.25 xx 10 xx 40 ) = 10 ms^(-1)`
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