Calculate natural frequency from spring constant and mass, beam properties, torsional stiffness and inertia, or damping ratio in Hz or rad/s.

Natural Frequency Formula

The following formula is used to calculate the natural frequency of a spring.

f = โˆš(k / m) / (2ฯ€)
  • Where f is the natural frequency (Hz)
  • k is the spring constant (N/m)
  • m is the oscillating mass (kg)

To calculate natural frequency, take the square root of the spring constant divided by the mass, then divide the result by 2 times pi.

Natural Frequency Definition

A natural frequency is a frequency that a system will naturally oscillate at.

Natural Frequency Example

How to calculate natural frequency?

  1. First, determine the spring constant.

    Determine the spring constant by applying a force and measuring the displacement.

  2. Next, determine the oscillating mass.

    Measure the mass of the attached oscillating body, using a consistent effective mass for your model. The simple formula assumes negligible spring mass.

  3. Finally, calculate the natural frequency.

    Enter the spring constant and mass into the formula to calculate the natural frequency.


FAQ

What is a natural frequency?

A natural frequency is a certain frequency at which a system will naturally oscillate.

What is oscillation?

Oscillation is the back-and-forth movement of a vibrating object.