1. What is a G-Force Calculator for Centrifuges?

Definition: This calculator determines the relative centrifugal force (RCF) or "g-force" experienced in a centrifuge based on angular velocity, radius, and gravity.

Purpose: It helps scientists, engineers, and lab technicians calculate the effective force applied to samples in centrifugation processes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( G \) — Relative centrifugal force (g-force)
• \( \omega \) — Angular velocity (radians per second)
• \( r \) — Radius from center to sample (meters)
• \( g \) — Gravitational acceleration (9.81 m/s² on Earth)

Explanation: The square of angular velocity multiplied by radius gives the centripetal acceleration, which is then divided by gravitational acceleration to express the force in g-units.

3. Importance of G-Force Calculation

Details: Accurate g-force calculation is crucial for proper sample separation, protocol standardization, and ensuring experimental reproducibility in centrifugation.

4. Using the Calculator

Tips: Enter the angular velocity in rad/s, radius in meters, and gravity (default 9.81 m/s²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I convert RPM to rad/s?
A: Multiply RPM by 0.10472 (2π/60) to convert to rad/s.

Q2: What's a typical centrifuge radius?
A: This varies by centrifuge model but is often between 0.1 to 0.2 meters for benchtop models.

Q3: Why is g-force important in centrifugation?
A: Different materials require specific g-forces for proper separation based on their density and size.

Q4: How does radius affect g-force?
A: G-force increases linearly with radius at constant angular velocity - samples farther from the center experience greater force.

Q5: Can I use this for ultracentrifuges?
A: Yes, the formula applies to all centrifuges, though ultracentrifuges typically operate at much higher speeds.