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Universal Gravitation

Calculate mutual gravitational attraction between point masses.

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Local calculations. Results are estimates, not professional advice.

Attractive force

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Idealized classical model in SI units. Check sign conventions and assumptions; not a certified engineering design calculation.

Formula

F=Gm₁m₂/r²

Calculate mutual gravitational attraction between point masses.

Worked example

Mass A (kg)
1000
Mass B (kg)
1000
Centre-to-centre separation (m)
1
Attractive force
6.6743E-5 N

Scope and limitations

Idealized classical model in SI units. Check sign conventions and assumptions; not a certified engineering design calculation.

Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.

Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.

Formula version: 4e4f15d8458b · Example checked:

Methodology

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