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For smooth driving, maximum speed of a car v is given by:

1. v = √(m²/R)
2. v = √(μs mg)
3. v = √(μs Rg)
4. v = √(Rg)

Correct answer: v = √(μs Rg)

Solution

The maximum speed for smooth driving on a curved path is determined by the centripetal force provided by friction. Using the formula v = √(μs Rg), where μs is the coefficient of static friction, R is the radius of the curve, and g is the acceleration due to gravity, we find the correct answer.

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