How do you calculate the rpm from rcf?

To calculate the revolutions per minute (rpm) from relative centrifugal force (rcf), you can use the formula:

[ \text{rcf} = \frac{(1.118 \times r \times \text{rpm}^2)}{1000} ]

where ( r ) is the radius of the rotor in centimeters. Rearranging this formula to solve for rpm gives:

[ \text{rpm} = \sqrt{\frac{\text{rcf} \times 1000}{1.118 \times r}} ]

This allows you to convert rcf to rpm based on the rotor radius.