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Circular Motion question

2021 · 17 Mar · Shift 1 · Q56
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  5. /2021 · 17 Mar · Shift 1 · Q56

Circular Motion question

2021 · 17 Mar · Shift 1 · Q56

JEE MainPhysicsCircular MotionMCQ+4 / −1
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\muμ 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) JEE Main 2021 (Online) 17th March Morning Shift Physics - Circular Motion Question 52 English
  1. A
    m(g−v2μsR)m\left( {g - {{{v^2}} \over {{\mu _s}R}}} \right)m(g−μs​Rv2​)
  2. B
    −m(g+v2μsR)- m\left( {g + {{{v^2}} \over {{\mu _s}R}}} \right)−m(g+μs​Rv2​)
  3. C
    m(v2μsR−g)m\left( {{{{v^2}} \over {{\mu _s}R}} - g} \right)m(μs​Rv2​−g)
  4. D
    m(v2μsR+g)m\left( {{{{v^2}} \over {{\mu _s}R}} + g} \right)m(μs​Rv2​+g)
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