Hi, I've been stuck on trying to figure out what im not seeing in the problem as i just cant seem to get the answer. A particle moving in simple harmonic motion with a period T = 1.5s passes through the equilibrium point at time t initial = 0 with a velocity of 1.0m/s to the right. At a time t later, the particle is observed to move to the left with a velocity of 0.50m/s. What is the smallest value of the time t? I just cant see what to do (although i have calculated the angular frequency ( 4(pi)/3). Thanks in advance.