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Pendulum Period Table (by Length)

Vary the string length over a range and step to list the simple pendulum period T=2π√(L/g) and frequency in a table. Set length range, step, and gravity.

Input

Vary the string length by range (start and end) and step width to view the simple pendulum period and frequency in a table.

m
m
m
m/s²

Default is standard gravity 9.80665 m/s squared.

Result

Period table by length (4 rows)

LengthPeriodFrequency
0.5 m1.418746 s0.704848 Hz
1 m2.006409 s0.498403 Hz
1.5 m2.457339 s0.406944 Hz
2 m2.837491 s0.352424 Hz

Period T = 2π√(L/g), frequency f = 1/T. An idealized simple pendulum model using the small-amplitude approximation.

How it works

  • The simple pendulum period in the small-amplitude approximation is T = 2π√(L/g), where L is the string length in meters and g is the gravitational acceleration in m/s squared.
  • The frequency is f = 1/T in hertz, the reciprocal of the period.
  • The table varies the length from the start value to the end value by the step width and lists the period and frequency for each length.
  • The standard gravity g = 9.80665 m/s squared is used as the default and can be changed.
  • This is an idealized simple pendulum model that ignores string mass, air resistance, and large-amplitude corrections.

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