. An airplane is flying in a loop, following a circular path with a radius of 2.5 km in the vertical plane. What is the minimum speed that the airplane can maintain without being forced out of the circular path? . A1,200.0 kg cargoes around a curve with a radius of 45 m. What is the maximum speed at which the car can safely make the turn, if the coefficient of static friction between the tires and the dry pavement is 0.50? Assume that the road is flat. . For a banked turn. what is the bank angle required to enable a 600.0 kg sled to make a turn with a radius of 35 m at 50.0 kmlh? . Find the optimal speed ofa car on a banked turn with a bank angle of 10 and a radius of30.0 m, so that that it completes the turn without using friction. . What coefficient of static friction would allow the car to turn a flat corner with a radius of 30.0 m at the speed you found in question 4. above