1. The problem statement, all variables and given/known data If a ball is attached to a string and is swung in the air, does the string do the work on the ball? 2. Relevant equations none 3. The attempt at a solution I have tried to figure it out. I have thought that it did because the string was the force that made the ball swing but then I thought it was the hand holding the string that was doing the work. I am very confused about this and have been unable to find anything about it in my book.