Browse Definitions :
Definition

gravitational constant

The gravitational constant, symbolized G , is a physical constant that appears in the equation for Newton's law of gravitation. Sir Isaac Newton (1642-1727), the English mathematician, quantified the behavior of the force of gravity . He noticed that the gravitational force between two objects is proportional to the product of their mass es, and inversely proportional to the square of the distance between their centers.

According to Newton's law , given any two objects having mass m 1 and m 2 (in kilogram s) whose centers of mass are separated by a distance r (in meter s), there exists an attractive gravitational force F (in newton s) between the objects, such that:

F = Gm 1 m 2 / r 2

The value of G in this equation is approximately equal to 6.67 x 10 -11 newton meters squared per kilogram squared (N x m 2 x kg -2 ). This constant is uniform throughout the Solar System, and apparently throughout our galaxy and other galaxies in its vicinity.

Some astronomers believe that if the universe is expanding as the popular Big Bang theory suggests, the value of G is gradually decreasing.

Also see the Table of Physical Units and Constants.

This was last updated in September 2005

Join the conversation

2 comments

Send me notifications when other members comment.

Please create a username to comment.

Is gravitational constant like the time it took for the apple to fall from the tree and when in accelerated?
Cancel
In the gravitational constant equation : 5.67359 x  10^-11 N x M^2 Kg^2: do the exponents signify an acceleration component comparable to 32 ' per sec per sec, or do they signify that the variables Meter and Kilogram are to be squared?
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

  • data protection impact assessment (DPIA)

    A data protection impact assessment (DPIA) is a process designed to help organizations determine how data processing systems, ...

SearchSecurity

  • identity provider

    An identity provider is a system component that is able to provide an end user or internet-connected device with a single set of ...

  • firewall

    A firewall is software or firmware that enforces a set of rules about what data packets will be allowed to enter or leave a ...

  • encryption

    Encryption is the method by which information is converted into secret code that hides the information's true meaning. The ...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

SearchStorage

Close