Period of a 2 Metre Pendulum on Earth
A 2 metre pendulum on Earth has a period of approximately 2.837 seconds.
How to use this tool
- Enter pendulum length l, gravity g and amplitude θ in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your period (small-angle approx.) and the full breakdown beneath it.
Doubling the length increases the period by a factor of √2 ≈ 1.414, so a 2 m pendulum swings about 41% more slowly than a 1 m one.
Frequently asked questions
- What is the period of a 1-metre pendulum on Earth?
- Approximately 2.006 seconds, which is why 1-metre pendulums were historically used in grandfather clocks (half-period ≈ 1 s per swing).
- Does mass affect the period?
- No — the small-angle period T = 2π√(L/g) is entirely independent of mass.