Question

The coefficient of friction between the tryes and the road is 0.25. the maximum speed with which a car can be driven round a curve of radius 40 m without skidding is (assume g= 10$m{s}^{-2}$)

• A. 40 $m{s}^{-1}$
• B. 20 $m{s}^{-1}$
• C. 15 $m{s}^{-1}$
• D. 10 $m{s}^{-1}$

Answer 1

The correct option is D 10 $m{s}^{-1}$

$v=\sqrt{\mu rg}=\sqrt{0.25\times 40\times 10}=10m/s$