Per NCERT §4.10 eqn 4.21, the MAXIMUM speed on a banked road (with friction μ_s) is which expression?
A√[R g (μ_s + tan θ)/(1 − μ_s tan θ)]
B√(R g tan θ) at optimum only
CR g / (μ_s + tan θ) ratio form
D√(R g μ_s) on level road only
Answer & Solution
Correct answer: A. √[R g (μ_s + tan θ)/(1 − μ_s tan θ)]
NCERT eqn 4.21: v_max for a banked road with friction. Always greater than √(μ_s R g) for the level road.
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