`F = (G* M_1 * M_2 ) / "R" ^2`

Enter a value for all fields

The Force of Gravity calculator computes the gravitational force between two masses (m₁ and m₂) separated by a specified distance (R).

INSTRUCTIONS: Choose units and enter the following:

(M₁) Mass of object 1
(M₂) Mass of object 2
(R) Distance between objects.

Force of Gravity (F): The force of gravity is returned in newtons. However, this can be automatically converted to other force units via the pull-down menu.

Note: vCalc provides special mass and distance units for application in space sciences. The mass units include Earth Mass, Jupiter Mass and Solar Mass. The distances include Astronomical Units (au), Light Seconds, Minutes, Hours, Days and Years, Parsecs, Kilo-Parsecs and Kilo-Light Years.

The Science

The Force of Gravity equation computes the gravitational force between two masses. In this equation, the masses are treated as point masses separated by a specified distance. The Force of Gravity equation is as follows:

F = (G•m1•m2)/R²

where:

F = force of gravity
G = Universal Gravitational Constant is 6.67384E-11 m³/kg•sec².
m1 = mass of the first object
m2 = mass of the second object
R = Radius associated with a force of gravity between two masses Force of Gravity

Gravity Calculators:

Reference

http://en.wikipedia.org/wiki/Gravitation
http://en.wikipedia.org/wiki/Newton%27s_law_of_universal_gravitation