Question

The coefficient of friction between the tires and the road is 0.4. The maximum speed of a car around a curve of radius 100 m is (g = 10 ms2)

Answer 1

Given :   r = 30 m               μ = 0.4                     g = 9.8m/s  

The maximum speed $v_{max}$ = $\sqrt{μgr}$ ( $μ$ = μ) = $\sqrt{0.4*9.8*30 }$ = 10.84 m/s