1. A 3.20-kilogram toy car is attached to a 125-centimeter string of negligible mass. The other end of the string is attached to a ring that is slipped over a peg. The tensile strength of the string is 144 newtons. The car revolves about the peg in a circular path on a frictionless table. Find the maximum angular speed that the car can travel in revolutions per minute without breaking the string.