Enter the force constant (erg/cm^2) and the reduced mass (g) into the Vibrational Frequency Calculator. The calculator will evaluate the Vibrational Frequency.

## Vibrational Frequency Formula

The following two example problems outline the steps and information needed to calculate the Vibrational Frequency.

VF = 1 / (2*pi*c) * SQRT ( k / u )

Variables:

• VF is the Vibrational Frequency (1/cm)
• k is the force constant (erg/cm^2)
• u is the reduced mass (g)
• c is the speed of light (29979245800 cm/s)

## How to Calculate Vibrational Frequency?

The following steps outline how to calculate the Vibrational Frequency.

1. First, determine the force constant (erg/cm^2).
2. Next, determine the reduced mass (g).
3. Next, gather the formula from above = VF = 1 / (2*pi*c) * SQRT ( k / u ) .
4. Finally, calculate the Vibrational Frequency.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

force constant (erg/cm^2) = 14

reduced mass (g) = 20

VF = 1 / (2*pi*c) * SQRT ( k / u )  = ?