1. The problem statement, all variables and given/known data A machine part is undergoing SHM with a frequency of 5 Hz and an amplitude of 1.8 cm. How long does it take the part to go from x=0 to x=-1.80 cm ? 2. Relevant equations x = Acos (ωt + φ) 3. The attempt at a solution 1.80 cm = 1.80 cm * cos (ωt + φ) ω = 2πf = 2π* 5hz cos (ωt + φ) = 1 ωt + φ = 2π What would φ be?