A child is swinging a 330-g ball at the end of a 66.0-cm-long string in a vertical circle. The string can withstand a tension of 11.0 N before breaking. (a) What is the tension in the string when the ball is at the top of the circle if its speed at that point is 4.00 m/s? N (b) What is the maximum speed the ball can have at the bottom of the circle if the string does not break? m/s DETAILS A car is driving around a flat, circularly curved road with a radius of 5.80 x 102 m. The mass of the car is 1840 kg, and the coefficient of static friction between its tires and the road is 0.30. (a) What is the maximum speed the car can have without slipping? m/s (b) What is the magnitude of the centripetal force on the car if it were to travel at the maximum speed around the track? N A car is driving around a banked, circularly curved road with a radius of 5.78 x 102 m. The mass of the car is 1794 kg, and the road is banked at an angle of 19. (a) Ignoring friction, what is the maximum speed the car can have without slipping? m/s (b) What is the magnitude of the centripetal force on the car if it were to travel at the maximum speed around the track? N