1. The problem statement, all variables and given/known data A 23.0 kg block at rest on a horizontal frictionless air track is connected to the wall via a spring. The equilibrium position of the mass is defined to be at x=0. Somebody pushes the mass to the position x= 0.350 m, then lets go. The mass undergoes simple harmonic motion with a period of 4.70 s. What is the position of the mass 3.760 s after the mass is released? Consider the same mass and spring discussed in the previous problem. What is the magnitude of the maximum acceleration the mass undergoes during its motion? 2. Relevant equations x = Acos(wt) 2piw = T 3. The attempt at a solution first I plugged in the given T to find w to use in the first equation, but now I have two unknowns, A and t. I know it isn't .350 because that's the amplitude for the time of the period, the amplitude I should use should be less than that, but I have no idea how to find that. Any ideas of what I'm doing wrong?