1. The problem statement, all variables and given/known data A 0.61 kg mass attached to a spring (k = 27 N m-1) is performing SHM on a smooth horizontal surface. Calculate the periodic time of these oscillations. 2. Relevant equations ω=2π/T ω=2πƒ 3. The attempt at a solution I think I need to find out the angular frequency ω of the oscillations in order to calculate the periodic time using ω=2π/T, but I have no idea how to calculate ω since it doesn't give you the frequency ƒ ?