Question

The maximum speed of a car on a road turn of radius 30m; if the coefficient of friction between the tyres and the road is 0.4; will be

• A. 9.84 m/s
• B. 10.84 m/s
• C. 7.84 m/s
• D. 5.84 m/s

Answer 1

Answer: (B)

10.84 m/s

Answer 2

$v = \sqrt{\mu rg} = \sqrt{0.4 \times 30 \times 9.8} = 10.84\mspace{6mu} m/s$