A modern grand-prix racing car|CIRCULAR MOTION|JEEMAIN 2021

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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 tyress and the track is $\mu_s$, then the magnitude of negative lift FL acting downwards on the car is: (Assume forces on the four tyres are identical and g = acceleration due to gravity)

Select the correct option:

A

$m\left(\frac{v^2}{\mu_s R}+g\right)$

B

$m\left(\frac{v^2}{\mu_s R}-g\right)$

C

$m\left(g-\frac{v^2}{\mu_s R}\right)$

D

$-m\left(g+\frac{v^2}{\mu_s R}\right)$

✓ Correct! Well done.

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