Задача 10047.

The pendulum consists of a very light rod, on which two identical weights of small dimensions are fixed: one at a distance of 30 cm from the axis, the other at a distance of 15 cm from the axis. Find the period of oscillation of the pendulum.

A detailed solution with a brief note of the condition, formulas and laws used in the solution, the derivation of the calculation formula and the answer.