1. The problem statement, all variables and given/known data A 150-g ball at the end of a string is revolving uniformly in a horizontal circle of radius 0.600m. The ball makes 2.00 revolutions in a second. What is the centripetal acceleration? 2. Relevant equations T = 1/f v = 2[tex]\pi[/tex]r / T 3. The attempt at a solution I know the answer to this question because its an exercise but I am confused with the "T" equation (Period equation). v = 2[tex]\pi[/tex]r / T v = 2(3.14)(0.600m) / (0.500s) How did we get the 0.500s?