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JEE · NEET Previous Year Question

$A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless road. If the banking angle is 45º, the speed of the car is :$

Topic: NEET PYQ

Answer: B. Full step-by-step solution below.

A $20 m s^{-1}$
B $30 m s^{-1}$
C $5 m s^{-1}$
D $10 m s^{-1}$

Correct answer: B

Solution

(b) For banking tan θ = \frac{V ^{2}}{Rg} tan 45 = \frac{V ^{2}}{90 \times 10} = 1 V = 30 m/s

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