The length of the Foucault pendulum in St. Isaac’s Cathedral in Leningrad is 98m. What is the period of oscillation of the pendulum?
| April 9, 2021 | education
Foucault’s pendulum in St. Isaac’s Cathedral is a mathematical pendulum, the period of oscillation of which can be calculated by the formula:
T = 2Π * √ (l / g), where l is the length of the Foucault pendulum (l = 98 m), g is the acceleration of gravity (let us take g = 9.8 m / s2).
We calculate the period of the Foucault pendulum:
T = 2Π * √ (l / g) = 2 * 3.14 * √ (98 / 9.8) = 19.86 s.
Answer: The oscillation period of the Foucault pendulum is 19.86 s.
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