A ball is attached to a string hanging from the ceiling, forming a pendulum. The mass of the string is negligible compared with the mass of the ball. At time t = 0 s, the pendulum is shifted from the vertical to an angle? =?₀, and then let go starting from rest. The angle?₀, is quite small, so that the approximation of? =?₀ is excellent. Which of the comments below is most correct?