Question

A bend in a level road has a radius of $10m$. Calculate the maximum speed which a car turning this bend may have without skidding. ($\mu =0.81$)

• A. $6m/s$
• B. $3m/s$
• C. $4m/s$
• D. $9m/s$

Answer 1

The correct option is D $9m/s$

Answer is D.
The maximum speed is given as $V_{max}=\sqrt{\mu rg}$. Let us consider g = $10m/s^2$.
That is, $\sqrt{0.81\times 100}=\sqrt{81}=9m/s$.
Hence, the maximum speed which a car turning this bend may have without skidding is $9m/s$.