A car of mass m is moving on a level circular track of radius

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A car of mass m is moving on a level circular track of radius R. If μ_s represents the static friction between the road and tyres of the car, the maximum speed of the car in circular motion is given by :

1. √μ_smRg
2. √Rg/μ_s
3. √mRg/μ_s
4. √μ_sRg

Correct Option: D

For smooth driving maximum speed of car v then

	mv²	= μmg
	R

v = √μ_sRg