Physics · 2021
JEE Main · 17 March 2021, Shift 1 · Q2
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…
A modern grand - prix racing car of mass $\displaystyle m$ is travelling on a flat track in a circular arc of radius R with a speed $\displaystyle v$. If the coefficient of static friction between the tyres and the track is $\displaystyle \mu_{\mathrm{s}}$, then the magnitude of negative lift $\displaystyle \mathrm{F}_{\mathrm{L}}$ acting downwards on the car is : (Assume forces on the four tyres are identical and $\displaystyle g=$ acceleration due to gravity)
Official answer
(3)
$\displaystyle \mathrm{m}\left(\frac{v^2}{\mu_{\mathrm{s}} \mathrm{R}}-\mathrm{g}\right)$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.