Question

A modern grand-prix racing car of mass m is travelling on a flat track in a circular arc of radius R with a speed v. If the coefficient of static friction between the tyres and the track is μ_s, then the magnitude of negative lift F_L acting downwards on the car is :

(Assume forces on the four tyres are identical and g = acceleration due to gravity)

(1) \(m(\frac {v^2}{\mu_sR}+g)\)

(2) \(m(\frac {v^2}{\mu_sR}-g)\)

(3) \(m(g-\frac {v^2}{\mu_sR})\)

(4) \(-m(g+\frac {v^2}{\mu_sR})\)

Answer 1

Correct option is  (2) \(m(\frac {v^2}{\mu_sR}-g)\)