What should be the length of the pendulum if the period of its oscillation is 0.5 s?

The oscillation period of the pendulum is given by the formula:
T = 2 * pi * root (l / g), where l is the length of the pendulum thread, g is the acceleration of gravity.

We square both sides of the formula:
T² = (4 * pi² * l) / g;
l = gT² / 4 * pi² = (9.8 m / s² * 0.5²) / (4 * 3.14²) = 0.62 m.

Answer: The length of the thread is 0.62 m.