Gravitational Force Calculator
Calculate gravitational attraction between two masses.
This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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Enter the two masses in kilograms and the distance between their centers in meters. The calculator computes the gravitational force using Newton's law of universal gravitation.
About Gravitational Force
Newton's law of universal gravitation describes the attractive force between any two masses. The force is proportional to the product of the masses and inversely proportional to the square of the distance. The gravitational constant G = 6.674 x 10^-11 N m2/kg2 was first measured by Henry Cavendish in 1798. This law explains planetary orbits, tides, and the large-scale structure of the universe.
Frequently Asked Questions
What is Newton's law of universal gravitation?
Every object attracts every other object with a force proportional to the product of their masses and inversely proportional to the square of the distance between them. The constant G is approximately 6.674 x 10^-11 N m2/kg2.
Why is gravitational force so weak compared to other forces?
The gravitational constant G is extremely small. Gravity only becomes significant when at least one object has enormous mass, like a planet or star. Between everyday objects, gravitational force is negligible.
Does gravitational force have a maximum range?
No. Gravity has infinite range, though it weakens with distance. Every mass in the universe exerts gravitational pull on every other mass, no matter how far apart.