1.

The displacement of an object oscillating on a spring is given by x(t) = x cos (wt +

The displacement of an object oscillating on a spring is given by x(t) x cos (wt + Q). If the initial displacement is zero and the initial velocity is in the positive x-direction, then the phase constant Q is: (Hint: v (t) = -wx sin (wt + W) ) O Jl/2 rad oo O Jl rad 0 311/2 rad 0 211 rad