I recently completed an experiment about centripetal motion in which we attached a string to a weighed mass and passed the string through a glass tube, tying the free end to another weighed mass. We then moved the tube so the upper mass traced out circular motion and recorded the period of rotation. We then varied independently each of the masses and the radius of rotation. On plotting the graphs, however, I wasn't able to clearly work out the relationship between the variables. My best calculations are that T squared is proporional to R T squared is inversely proportional to the mass used to provide the centripetal force T is proportional to the moving mass I'm not sure of the equations I should be using to determine these relationships. Can anyone help?