Question

The displacement of an object oscillating on a spring is
given by X(t)=Xmcos(wt+theta)
• If the object is initially displaced in the negative x
direction and given a negative initial velocity, then the
phase constant is between
A. 0 and π/2 rad
B. π/2 and π rad
C. π and 3π/2 rad
D. 3π/2 and 2π rad
E. None of the above (it is exactly 0, π/2, π, or 3π/2 rad)