Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Universal Gravitational Law

The gravitational attraction between two objects depends on the mass of the objects and the distance between them

Sponsored Links

The gravitational attraction between two objects depends upon the mass of the objects and the distance between them. This relationship is often called the "Universal Law of Gravitation" and can be expressed as

F = kG m1 m2 / r2                           (1)

where

F = gravitational force (N)

kG = 6.668 10-11 (Nm2/kg2) = the Universal Gravitation Constant 

m = mass of object (kg)

r = distance between objects (m)

Example - The Gravitational Force (Weight) Acting on a Person on Earth's Surface

The gravitational force (or weight) acting on a person with mass 70 kg on the earth's surface (6.37 106 m from the earth's center) can be calculated as

F = (6.668 10-11 Nm2/kg2) (5.98 1024 kg) (70 kg) / (6.37 106 m)2

    = 688.1 (N)

  • 5.98 1024 (kg) = mass of earth
Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: universal gravitational law force
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Citation

This page can be cited as

  • Engineering ToolBox, (2005). Universal Gravitational Law. [online] Available at: https://www.engineeringtoolbox.com/universal-gravitational-law-d_992.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

4 20

Sponsored Links
.