The freeway off-ramp is circular with 60-m radius (Fig. a). The off-ramp has a slope β = 1...

The freeway off-ramp is circular with 60-m radius (Fig. a). The off-ramp has a slope β = 15° (Fig. b). If the coefficient of static friction between the tires of a car and the road is μs = 0.4, what is the maximum speed at which it can enter the ramp without losing traction? (See Example 14.8.)