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A car is negotisting a curved road of ra...

A car is negotisting a curved road of radius `R` . The road is banked at an angle theta. The coefficient of friction between the tyres of the car and the road is `mu_(s)` . The maximum safe velocity on this road is:

A

`sqrt((g)/(R^(2)) (mu_(s)+tan theta)/(1-mu_(s) tan theta))`

B

`sqrt(gR^(2) (mu_(s)+tan theta)/(1-mu_(s)tan theta))`

C

`sqrt(gR (mu_(s)+tan theta)/(1-mu_(s)tan theta))`

D

`sqrt((g)/(R) (mu_(s)+tan theta)/(1-mu_(s)tan theta))`

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