1. The problem statement, all variables and given/known data What is the work done per one revolution by tension in a suspended 2m rope with a 150 g tennis ball attached to its end if you swing the rope 2 times a second such that the tennis ball is in a circular trajectory? 2. The attempt at a solution The work done is the force multiplied the distance. I don't understand how the force of the tension in the rope is traveling a distance which makes me think that the work done is 0.