333. Express in terms of proportionality the dependence $t=2 \pi \sqrt{\prime} \frac{\bar{l}}{g}$, where $t$ denotes the period of oscillation of a pendulum, $l$ its length, and $g$ the gravitational constant (acceleration due to gravity).
333. The period of oscillation of a pendulum is proportional to the square root of its length ( $\pi$ and $g$ are constant numbers).