Reduced Mass Calculator

Free calculate the reduced mass of a two-body system to simplify two-body problems into equivalent one-body problems.

Input Parameters

Results

Enter masses to calculate reduced mass

Reduced Mass Formula

Reduced Mass (μ)

μ = (m₁ × m₂) / (m₁ + m₂)

Where:

  • • μ = reduced mass (kg)
  • • m₁ = mass of first body (kg)
  • • m₂ = mass of second body (kg)

Applications

• Celestial mechanics (planets, moons)

• Atomic physics (electron-nucleus)

• Molecular vibrations

• Two-body collisions

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