hi guys, I'm currently working on a physics report about a simple pendulum and cant figure out how to answer one of the questions: 3. "define all terms in the solution(x(t)=Acos(ωt)) and especially the relationship between angular frequency, and periodic time, T." ive defined all the terms, A is amplitude, ω is angular frequency etc. but have no clue of the relationship between angular frequency, and periodic time????? I know that ω=2∏/T = 2∏f and T=2∏√l/g but don't get their relationship? any help will be great. cheers, Joel C.