- Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it installed. Suppose a 1 800-kg car passes over a hump in a roadway that follows the arc of a circle of radius 20.4 m as shown in Figure P6.40. (a) If the car travels at 30.0 km/h, what force does the road exert on the car as the car passes the high- est point of the hump? (b) What If? What is the maximum speed the car can have with- out losing contact with the road as it passes this highest point? Figure P6.40 Problems 40 and 41.

- Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it installed. Suppose a 1 800-kg car passes over a hump in a roadway that follows the arc of a circle of radius 20.4 m as shown in Figure P6.40. (a) If the car travels at 30.0 km/h, what force does the road exert on the car as the car passes the high- est point of the hump? (b) What If? What is the maximum speed the car can have with- out losing contact with the road as it passes this highest point? Figure P6.40 Problems 40 and 41.