A pendulum consists of a mass less, rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn during a complete circle. The pendulum is inverted, therefore the mass is directly above the pivot point, and then released. The speed of the mass as it passes during the lowest point is 3.5m/s.
If the pendulum undergoes small-amplitude oscillations at the bottom of the arc, what will the frequency be?