Question

Radius of curved road on a highway is $R$. Width of road is $6$. The outer edge of road is raised by $h$ w.r.t. inner edge so that a car with velocity $\upsilon$ can pass safe over it. The value of $h$ is

• A. $\frac{\upsilon^2}{Rg}b$
• B. $\frac{\upsilon}{Rgh}$
• C. $\frac{\upsilon^2R}{g}$
• D. $\frac{\upsilon^2}{R}$

Answer 1

Answer: (A)

$\frac{\upsilon^2}{Rg}b$

Answer 2

$tan \, \theta = \frac{\upsilon^2}{Rg} b$ i.e. $\frac{h}{b} = \frac{\upsilon^2}{Rg}$ i.e. $h = \frac{\upsilon^2}{Rg}b$