Gravitational Force Equation

Reference from the original Physics I textbook.

Gravitational force magnitude: $F_{G} = \frac{G}{m_{1}}$ . It is attractive and acts along the line joining the masses.

${\vec{F}}_{G} = Gravitational Force (N)$
$G = Universal Gravitational Constant = 6.673 \cdot 10^{- 11} (m^{3} / kg \cdot s^{2})$
$m_{1} = Mass of the first body (kg)$
$m_{2} = Mass of the second body (kg)$
$r = Distance between two objects (m)$

$[\begin{aligned} 1 Newton & = 1 kg \cdot m / s^{2} \end{aligned}]$

Related Glossary Terms

Force of Gravity Equation, Gravitational Force, Gravity

Index

Chapter 3 - Gravity in Depth

Chapter 3 - FFR - Kepler’s Laws

Reviewed physics notes (1)

These corrections keep the original lesson’s purpose while fixing errors in the source edition.

Vector force needs a unit direction; the listed formula is its magnitude. — Reference 1

About this edition and its source ↗

Glossary and deeper reading · 1 refreshers

These editorial refreshers supplement the reading. Definitions and examples are added guidance; original source wording and recorded answers remain in their original context.

Gravity
Gravity is the attractive interaction between masses in the Newtonian model. For spherical bodies or point-mass approximations, its strength decreases with the square of the separation between their centers. For example, Earth’s gravity provides the inward force that keeps a satellite in orbit.
Read more: Gravitational force →

Gravitational Force Equation

Gravity

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