Question

Find the maximum velocity for overturn for a car moved on a circular track of radius $100m$. The coefficient of friction between the road and tyre is $0.2$

• A. $0.14\mspace{6mu} m/s$
• B. $140\mspace{6mu} m/s$
• C. $1.4\mspace{6mu} km/s$
• D. $14\mspace{6mu} m/s$

Answer 1

Answer: (D)

$14\mspace{6mu} m/s$

Answer 2

${v\sqrt{\mu rg}}_{\max} = \sqrt{0.2 \times 100 \times 10} = 10\sqrt{2} = 14m/s$