일반물리학 1 — Oscillations: Problem 38

38 What is the phase constant for the harmonic oscillator with the position function \(x(t)\) given in Fig. 15-34 if the position function has the form \(x = x_m \cos(\omega t + \phi)\)? The vertical axis scale is set by \(x_s = 9.0 \text{ cm}\).