A pendulum is formed by pivoting a long thin rod about a point on the rod. In a series of experiments, the period is measured as a function of the distance x between the pivot point and the rod's center.
(a) If the rod's length is L = 2.20 m and its mass rs m = 22.1 g, what is the minimum period?
(b) If x is chosen to minimize the period and then L is increased, does the period increase, decrease, or remain the same?
(c) If instead m is increased with out L increasing, does the period increase, decrease, or remain the same?